| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Signature | 23/01/1957 | |
| AFGHANISTAN | Ratification | 31/05/1957 | 29/07/1957 |
| ALBANIA | Signature | 26/10/1956 | |
| ALBANIA | Ratification | 23/08/1957 | 23/08/1957 |
| ALGERIA | Acceptance | 24/12/1963 | 24/12/1963 |
| Antilles | Extension | 01/01/1986 | |
| ARGENTINA | Signature | 26/10/1956 | |
| ARGENTINA | Ratification | 03/10/1957 | 03/10/1957 |
| ARGENTINA | Reservation | 03/10/1957 | |
| ARMENIA | Acceptance | 27/09/1993 | 27/09/1993 |
| Aruba | Extension | 01/01/1986 | |
| AUSTRALIA | Signature | 14/12/1956 | |
| AUSTRALIA | Ratification | 29/07/1957 | 29/07/1957 |
| AUSTRIA | Signature | 26/10/1956 | |
| AUSTRIA | Ratification | 10/05/1957 | 29/07/1957 |
| BANGLADESH | Acceptance | 27/09/1972 | 27/09/1972 |
| BELGIUM | Signature | 26/10/1956 | |
| BELGIUM | Ratification | 29/04/1958 | 29/04/1958 |
| BENIN | Acceptance | 26/05/1999 | |
| BOLIVIA | Signature | 26/10/1956 | |
| BOLIVIA | Ratification | 15/03/1963 | 15/03/1963 |
| BOSNIA AND HERZEGOVINA | Acceptance | 18/10/1995 | 18/10/1995 |
| BRAZIL | Signature | 26/10/1956 | |
| BRAZIL | Ratification | 29/07/1957 | 29/07/1957 |
| BULGARIA | Signature | 26/10/1956 | |
| BULGARIA | Ratification | 17/08/1957 | 17/08/1957 |
| BURMA | Signature | 01/09/1957 | |
| BURMA | Ratification | 18/10/1957 | 18/10/1957 |
| BYELORUSSIA S S R | Signature | 26/10/1956 | |
| BYELORUSSIA S S R | Ratification | 08/04/1957 | 29/07/1957 |
| BYELORUSSIA S S R | Notification | 08/10/1957 | |
| CAMBODIA | Signature | 26/10/1956 | |
| CAMBODIA | Ratification | 06/02/1958 | 06/02/1958 |
| CAMBODIA | Withdrawal | 26/03/2003 | |
| CAMEROON | Acceptance | 13/07/1964 | 13/07/1964 |
| CANADA | Signature | 26/10/1956 | |
| CANADA | Ratification | 29/07/1957 | 29/07/1957 |
| CEYLON | Signature | 26/10/1956 | |
| CEYLON | Ratification | 22/08/1957 | 22/08/1957 |
| CHILE | Signature | 26/10/1956 | |
| CHILE | Ratification | 19/09/1960 | 19/09/1960 |
| CHINA | Signature | 26/10/1956 | |
| CHINA | Ratification | 10/09/1957 | |
| CHINA | Acceptance | 01/01/1984 | 01/01/1984 |
| COLOMBIA | Signature | 26/10/1956 | |
| COLOMBIA | Ratification | 30/09/1960 | 30/09/1960 |
| COSTA RICA | Signature | 26/10/1956 | |
| COSTA RICA | Ratification | 25/03/1965 | 25/03/1965 |
| CROATIA | Acceptance | 12/02/1993 | 12/02/1993 |
| CUBA | Signature | 16/10/1956 | |
| CUBA | Ratification | 01/10/1957 | 01/10/1957 |
| CYPRUS | Acceptance | 07/06/1965 | 07/06/1965 |
| CZECH REPUBLIC | Succession | 27/09/1993 | 27/09/1993 |
| CZECHOSLOVAKIA | Signature | 26/10/1956 | |
| CZECHOSLOVAKIA | Ratification | 05/07/1957 | |
| DENMARK | Signature | 26/10/1956 | |
| DENMARK | Ratification | 16/07/1957 | 29/07/1957 |
| DOMINICAN REPUBLIC | Signature | 26/10/1956 | |
| DOMINICAN REPUBLIC | Ratification | 11/07/1957 | 29/07/1957 |
| ECUADOR | Signature | 26/10/1956 | |
| ECUADOR | Ratification | 03/03/1958 | |
| EGYPT | Signature | 26/10/1956 | |
| EGYPT | Ratification | 04/09/1957 | 04/09/1957 |
| EL SALVADOR | Signature | 26/10/1956 | |
| EL SALVADOR | Ratification | 22/11/1957 | 22/11/1957 |
| ESTONIA | Acceptance | 31/01/1992 | 31/01/1992 |
| ETHIOPIA | Signature | 26/10/1956 | |
| ETHIOPIA | Ratification | 30/09/1957 | 30/09/1957 |
| FINLAND | Acceptance | 07/01/1958 | 07/01/1958 |
| FRANCE | Signature | 26/10/1956 | |
| FRANCE | Ratification | 29/07/1957 | 29/07/1957 |
| FRANCE | Notification | 28/03/1974 | |
| GABON | Acceptance | 21/01/1964 | 21/01/1964 |
| GERMAN DEMOCRATIC REPUBLIC | Acceptance | 18/09/1973 | 18/09/1973 |
| GERMAN DEMOCRATIC REPUBLIC | Statement | 18/09/1973 | |
| GERMANY FEDERAL REPUBLIC | Statement | 01/01/1905 | |
| GERMANY FEDERAL REPUBLIC | Signature | 26/10/1956 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 01/10/1957 | 01/10/1957 |
| GHANA | Acceptance | 28/09/1960 | 28/09/1960 |
| GREECE | Signature | 26/10/1956 | |
| GREECE | Ratification | 30/09/1957 | 30/09/1957 |
| GUATEMALA | Signature | 26/10/1956 | |
| GUATEMALA | Ratification | 29/03/1957 | 29/07/1957 |
| HAITI | Signature | 26/10/1956 | |
| HAITI | Ratification | 07/10/1957 | 07/10/1957 |
| HONDURAS | Signature | 26/10/1956 | |
| HONDURAS | Ratification | 09/07/1957 | 29/07/1957 |
| HONDURAS | Withdrawal | 19/06/1967 | |
| HONDURAS | Ratification | 24/02/2003 | 24/02/2003 |
| HUNGARY | Signature | 26/10/1956 | |
| HUNGARY | Ratification | 08/08/1957 | 08/08/1957 |
| ICELAND | Signature | 26/10/1956 | |
| ICELAND | Ratification | 06/08/1957 | 06/08/1957 |
| INDIA | Signature | 26/10/1956 | |
| INDIA | Ratification | 16/07/1957 | 29/07/1957 |
| INDIA | Notification | 19/09/1957 | |
| INDONESIA | Signature | 26/10/1956 | |
| INDONESIA | Ratification | 07/08/1957 | 07/08/1957 |
| IRAN | Signature | 26/10/1956 | |
| IRAN | Ratification | 16/09/1958 | 16/09/1958 |
| IRAQ | Signature | 15/01/1957 | |
| IRAQ | Ratification | 04/03/1959 | 04/03/1959 |
| IRELAND, REPUBLIC OF | Acceptance | 06/01/1970 | 06/01/1970 |
| ISRAEL | Signature | 26/10/1956 | |
| ISRAEL | Ratification | 12/07/1957 | 29/07/1957 |
| ITALY | Signature | 15/11/1956 | |
| ITALY | Ratification | 30/09/1957 | 30/09/1957 |
| IVORY COAST | Acceptance | 19/11/1963 | 19/11/1963 |
| JAMAICA | Acceptance | 29/12/1965 | 29/12/1965 |
| JAPAN | Signature | 26/10/1956 | |
| JAPAN | Ratification | 16/07/1957 | 29/07/1957 |
| JORDAN | Acceptance | 18/04/1966 | 18/04/1966 |
| KAZAKHSTAN | Acceptance | 14/02/1994 | 14/02/1994 |
| KENYA | Acceptance | 12/07/1965 | 12/07/1965 |
| KOREA | Signature | 26/10/1956 | |
| KOREA | Ratification | 08/08/1957 | 08/08/1957 |
| KOREA DEMOCRATIC PEOPLE'S REPUBLIC OF | Acceptance | 18/09/1974 | 18/09/1974 |
| KOREA DEMOCRATIC PEOPLE'S REPUBLIC OF | Withdrawal | 13/06/1994 | |
| KUWAIT | Acceptance | 01/12/1964 | 01/12/1964 |
| Land Berlin | Extension | 01/10/1957 | 01/10/1957 |
| LAOS | Signature | 17/01/1957 | |
| LEBANON | Signature | 26/10/1956 | |
| LEBANON | Ratification | 29/06/1961 | 29/06/1961 |
| LIBERIA | Signature | 26/10/1956 | |
| LIBERIA | Ratification | 05/10/1962 | 05/10/1962 |
| LIBYA | Signature | 26/10/1956 | |
| LIBYA | Ratification | 09/09/1963 | 09/09/1963 |
| LIECHTENSTEIN | Acceptance | 13/12/1968 | 13/12/1968 |
| LITHUANIA | Acceptance | 18/11/1993 | 18/11/1993 |
| LUXEMBOURG | Signature | 18/01/1957 | |
| LUXEMBOURG | Ratification | 29/01/1958 | 29/01/1958 |
| MACEDONIA THE FYR OF | Acceptance | 24/02/1994 | 24/02/1994 |
| MADAGASCAR | Acceptance | 22/03/1965 | 22/03/1965 |
| MALAYSIA | Acceptance | 15/01/1969 | 15/01/1969 |
| MALI | Acceptance | 10/08/1961 | 10/08/1961 |
| MARSHALL ISLANDS | Acceptance | 26/01/1994 | 26/01/1994 |
| MAURITIUS | Acceptance | 31/12/1974 | 31/12/1974 |
| MEXICO | Signature | 07/12/1956 | |
| MEXICO | Ratification | 07/04/1958 | 07/04/1958 |
| MONACO | Signature | 26/10/1956 | |
| MONACO | Ratification | 19/09/1957 | 19/09/1957 |
| MONGOLIA | Acceptance | 20/09/1973 | 20/09/1973 |
| MOROCCO | Signature | 09/01/1957 | |
| MOROCCO | Ratification | 17/09/1957 | 17/09/1957 |
| NAMIBIA | Acceptance | 17/02/1983 | 17/02/1983 |
| NETHERLANDS THE | Signature | 26/10/1956 | |
| NETHERLANDS THE | Ratification | 30/07/1957 | 30/07/1957 |
| New Guinea | Extension | 30/07/1957 | 30/07/1957 |
| NEW ZEALAND | Signature | 26/10/1956 | |
| NEW ZEALAND | Ratification | 13/09/1957 | 13/09/1957 |
| NICARAGUA | Signature | 23/01/1957 | |
| NICARAGUA | Ratification | 17/09/1957 | |
| NICARAGUA | Withdrawal | 14/12/1970 | |
| NICARAGUA | Acceptance | 25/03/1977 | 25/03/1977 |
| NIGER | Acceptance | 27/03/1969 | 27/03/1969 |
| NIGERIA | Acceptance | 25/03/1964 | 25/03/1964 |
| NORWAY | Signature | 26/10/1956 | |
| NORWAY | Ratification | 10/06/1957 | 29/07/1957 |
| PAKISTAN | Signature | 26/10/1956 | |
| PAKISTAN | Ratification | 02/05/1957 | 29/07/1957 |
| PANAMA | Signature | 26/10/1956 | |
| PANAMA | Ratification | 02/03/1966 | 02/03/1966 |
| PARAGUAY | Signature | 26/10/1956 | |
| PARAGUAY | Ratification | 30/09/1957 | 30/09/1957 |
| PERU | Signature | 26/10/1956 | |
| PERU | Ratification | 30/09/1957 | 30/09/1957 |
| PHILIPPINES | Signature | 05/12/1956 | |
| PHILIPPINES | Ratification | 02/09/1958 | 02/09/1958 |
| POLAND | Signature | 26/10/1956 | |
| POLAND | Ratification | 31/07/1957 | 31/07/1957 |
| PORTUGAL | Signature | 26/10/1956 | |
| PORTUGAL | Ratification | 12/07/1957 | 29/07/1957 |
| QATAR | Acceptance | 27/02/1976 | 27/02/1976 |
| ROUMANIA | Signature | 26/10/1956 | |
| ROUMANIA | Ratification | 12/04/1957 | 29/07/1957 |
| ROUMANIA | Notification | 27/06/1959 | |
| SAUDI ARABIA | Acceptance | 13/12/1962 | 13/12/1962 |
| SENEGAL | Acceptance | 01/11/1960 | 01/11/1960 |
| SIERRA LEONE | Acceptance | 04/06/1967 | 04/06/1967 |
| SINGAPORE | Acceptance | 05/01/1967 | 05/01/1967 |
| SLOVAK REPUBLIC | Succession | 27/09/1933 | 27/09/1993 |
| SLOVENIA | Acceptance | 21/09/1992 | 21/09/1992 |
| SOUTH AFRICA | Signature | 26/10/1956 | |
| SOUTH AFRICA | Ratification | 06/06/1957 | 29/07/1957 |
| SOVIET UNION | Signature | 26/10/1956 | |
| SOVIET UNION | Ratification | 08/04/1957 | 29/07/1957 |
| SOVIET UNION | Notification | 27/09/1957 | |
| SPAIN | Signature | 26/10/1956 | |
| SPAIN | Ratification | 26/08/1957 | 26/08/1957 |
| SUDAN | Signature | 26/10/1956 | |
| SUDAN | Ratification | 17/07/1958 | 17/07/1958 |
| Surinam | Extension | 30/07/1957 | 30/07/1957 |
| SWEDEN | Signature | 26/10/1956 | |
| SWEDEN | Ratification | 19/06/1957 | 29/07/1957 |
| SWITZERLAND | Signature | 26/10/1956 | |
| SWITZERLAND | Ratification | 05/04/1957 | 29/07/1957 |
| SWITZERLAND | Reservation | 05/04/1957 | |
| SYRIA | Signature | 26/10/1956 | |
| SYRIA | Ratification | 06/06/1963 | 06/06/1963 |
| TANZANIA | Acceptance | 06/01/1976 | 06/01/1976 |
| THAILAND | Signature | 26/10/1956 | |
| THAILAND | Ratification | 15/10/1957 | 15/10/1957 |
| TUNISIA | Signature | 08/01/1957 | |
| TUNISIA | Ratification | 14/10/1957 | 14/10/1957 |
| TURKEY | Signature | 26/10/1956 | |
| TURKEY | Ratification | 19/07/1957 | 29/07/1957 |
| UGANDA | Acceptance | 30/08/1967 | 30/08/1967 |
| UKRAINE S S R | Signature | 26/10/1956 | |
| UKRAINE S S R | Ratification | 31/07/1957 | |
| UNITED ARAB EMIRATES | Acceptance | 15/01/1976 | 15/01/1976 |
| UNITED KINGDOM | Signature | 26/10/1956 | |
| UNITED KINGDOM | Ratification | 29/07/1957 | 29/07/1957 |
| UNITED KINGDOM | Reservation | 29/07/1957 | |
| UNITED KINGDOM | Notification | 28/03/1974 | |
| UNITED STATES OF AMERICA | Signature | 26/10/1956 | |
| UNITED STATES OF AMERICA | Ratification | 29/07/1957 | 29/07/1957 |
| UNITED STATES OF AMERICA | Statement | 29/07/1957 | |
| UNITED STATES OF AMERICA | Notification | 03/04/1974 | |
| URUGUAY | Signature | 26/10/1956 | |
| URUGUAY | Ratification | 22/01/1963 | 22/01/1963 |
| UZBEKISTAN | Acceptance | 26/01/1994 | 26/01/1994 |
| VATICAN CITY | Signature | 26/10/1956 | |
| VATICAN CITY | Ratification | 20/08/1957 | 20/08/1957 |
| VENEZUELA | Signature | 26/10/1956 | |
| VENEZUELA | Statement | 26/10/1956 | |
| VENEZUELA | Declaration | 26/10/1956 | |
| VENEZUELA | Ratification | 19/08/1957 | 19/08/1957 |
| VIETNAM | Acceptance | 06/10/1978 | |
| VIETNAM D R | Signature | 26/10/1956 | |
| VIETNAM D R | Ratification | 24/09/1957 | 24/09/1957 |
| YEMEN, REPUBLIC OF | Acceptance | 14/10/1994 | 14/10/1994 |
| YUGOSLAVIA | Signature | 26/10/1956 | |
| YUGOSLAVIA | Ratification | 17/09/1957 | 17/09/1957 |
| ZAIRE | Acceptance | 10/10/1961 | 10/10/1961 |
| ZAMBIA | Acceptance | 08/01/1969 | 08/01/1969 |
| ZIMBABWE | Acceptance | 01/08/1986 | 01/08/1986 |