| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Signature | 30/10/1958 | |
| AFGHANISTAN | Ratification | 28/04/1959 | |
| ALBANIA | Accession | 07/12/1964 | |
| Antilles | Extension | | 01/01/1986 |
| ARGENTINA | Signature | 29/04/1958 | |
| Aruba | Extension | | 01/01/1986 |
| AUSTRALIA | Signature | 30/10/1958 | |
| AUSTRALIA | Objection | 14/05/1963 | |
| AUSTRALIA | Ratification | 14/05/1963 | |
| AUSTRALIA | Objection | 01/02/1965 | |
| AUSTRALIA | Objection | 31/01/1968 | |
| AUSTRALIA | Objection | 29/09/1976 | |
| AUSTRIA | Signature | 27/10/1958 | |
| AUSTRIA | Ratification | 10/01/1974 | 09/02/1974 |
| BELGIUM | Accession | 06/01/1972 | |
| Berlin West | Extension | 26/07/1973 | 25/08/1973 |
| BOLIVIA | Signature | 17/10/1958 | |
| BOSNIA AND HERZEGOVINA | Succession | 01/09/1993 | 06/03/1992 |
| BULGARIA | Signature | 31/10/1958 | |
| BULGARIA | Ratification | 31/08/1962 | |
| BULGARIA | Declaration | 31/08/1962 | |
| BYELORUSSIA S S R | Signature | 30/10/1958 | |
| BYELORUSSIA S S R | Ratification | 27/02/1961 | |
| BYELORUSSIA S S R | Statement | 13/02/1974 | |
| CAMBODIA | Accession | 18/03/1960 | |
| CANADA | Signature | 29/04/1958 | |
| CENTRAL AFRICAN REPUBLIC | Accession | 15/10/1962 | |
| CEYLON | Signature | 30/10/1958 | |
| CHINA REPUBLIC OF | Signature | 29/04/1958 | |
| COLOMBIA | Signature | 29/04/1958 | |
| COSTA RICA | Signature | 29/04/1958 | |
| COSTA RICA | Ratification | 16/02/1972 | 17/03/1972 |
| CROATIA | Succession | 03/08/1992 | 08/10/1991 |
| CUBA | Signature | 29/04/1958 | |
| CYPRUS | Succession | 23/05/1988 | 22/06/1988 |
| CZECH REPUBLIC | Succession | 22/02/1993 | 01/01/1993 |
| CZECH REPUBLIC | Declaration | 22/02/1993 | |
| CZECHOSLOVAKIA | Signature | 30/10/1958 | |
| CZECHOSLOVAKIA | Reservation | 30/10/1958 | |
| CZECHOSLOVAKIA | Declaration | 30/10/1958 | |
| CZECHOSLOVAKIA | Ratification | 31/08/1961 | |
| CZECHOSLOVAKIA | Reservation | 31/08/1961 | |
| CZECHOSLOVAKIA | Communication | 06/12/1973 | |
| DENMARK | Signature | 29/04/1958 | |
| DENMARK | Ratification | 26/09/1968 | |
| DENMARK | Objection | 26/09/1968 | |
| DENMARK | Objection | 31/10/1974 | |
| DOMINICAN REPUBLIC | Signature | 29/04/1958 | |
| DOMINICAN REPUBLIC | Ratification | 11/08/1964 | |
| FIJI | Succession | 25/03/1971 | |
| FIJI | Objection | 25/03/1971 | |
| FINLAND | Signature | 27/10/1958 | |
| FINLAND | Ratification | 16/02/1965 | |
| FRANCE | Signature | 30/10/1958 | |
| FRANCE | Declaration | 08/07/1975 | |
| GERMAN DEMOCRATIC REPUBLIC | Declaration | 27/12/1973 | 26/01/1974 |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 27/12/1973 | 26/01/1974 |
| GERMAN DEMOCRATIC REPUBLIC | Communication | 27/12/1973 | |
| GERMANY FEDERAL REPUBLIC | Signature | 30/10/1958 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 26/07/1973 | 25/08/1973 |
| GERMANY FEDERAL REPUBLIC | Statement | 26/07/1973 | |
| GERMANY FEDERAL REPUBLIC | Objection | 15/07/1974 | |
| GERMANY FEDERAL REPUBLIC | Objection | 02/03/1977 | |
| GHANA | Signature | 29/04/1958 | |
| GUATEMALA | Signature | 29/04/1958 | |
| GUATEMALA | Ratification | 27/11/1961 | |
| HAITI | Signature | 29/04/1958 | |
| HAITI | Ratification | 29/03/1960 | |
| HUNGARY | Signature | 31/10/1958 | |
| HUNGARY | Ratification | 06/12/1961 | |
| ICELAND | Signature | 29/04/1958 | |
| INDONESIA | Signature | 08/05/1958 | |
| INDONESIA | Ratification | 10/08/1961 | |
| IRAN | Signature | 28/05/1958 | |
| IRAN | Reservation | 28/05/1958 | |
| IRELAND, REPUBLIC OF | Signature | 02/10/1958 | |
| ISRAEL | Signature | 29/04/1958 | |
| ISRAEL | Ratification | 06/09/1961 | |
| ITALY | Accession | 17/12/1964 | |
| JAMAICA | Succession | 08/10/1965 | |
| JAPAN | Accession | 10/06/1968 | |
| JAPAN | Objection | 10/06/1968 | |
| KENYA | Accession | 20/06/1969 | |
| LATVIA | Accession | 17/11/1992 | 17/12/1992 |
| LEBANON | Signature | 29/04/1958 | |
| LESOTHO | Succession | 23/10/1973 | 04/10/1966 |
| LIBERIA | Signature | 27/05/1958 | |
| MALAGASY REPUBLIC | Accession | 31/07/1962 | |
| MALAWI | Accession | 03/11/1965 | |
| MALAYSIA | Accession | 21/12/1960 | |
| MAURITIUS | Succession | 05/10/1970 | |
| MEXICO | Accession | 02/08/1966 | |
| MONGOLIA | Accession | 15/10/1976 | 14/11/1976 |
| MONGOLIA | Withdrawal Res. | 19/07/1990 | |
| MONTENEGRO | Succession | 23/10/2006 | 03/06/2006 |
| NEPAL | Signature | 29/04/1958 | |
| NEPAL | Ratification | 28/12/1962 | |
| NETHERLANDS THE | Signature | 31/10/1958 | |
| NETHERLANDS THE | Ratification | 18/02/1966 | |
| NETHERLANDS THE | Objection | 17/03/1967 | |
| NEW ZEALAND | Signature | 29/10/1958 | |
| NIGERIA | Succession | 26/06/1961 | |
| PAKISTAN | Signature | 31/10/1958 | |
| PANAMA | Signature | 02/05/1958 | |
| PAPUA NEW GUINEA | Statement | 12/04/1976 | |
| POLAND | Signature | 31/10/1958 | |
| POLAND | Ratification | 29/06/1962 | |
| POLAND | Reservation | 29/06/1962 | |
| PORTUGAL | Signature | 28/10/1958 | |
| PORTUGAL | Ratification | 08/01/1963 | |
| ROMANIA | Signature | 31/10/1958 | |
| ROMANIA | Ratification | 12/12/1961 | |
| ROMANIA | Declaration | 12/12/1961 | |
| SENEGAL | Accession | 25/04/1961 | |
| SIERRA LEONE | Succession | 13/03/1962 | |
| SLOVAK REPUBLIC | Succession | 28/05/1993 | 01/01/1993 |
| SLOVENIA | Succession | 01/07/1992 | 25/06/1991 |
| SOLOMON ISLANDS | Succession | 03/09/1981 | |
| SOUTH AFRICA | Accession | 09/04/1963 | |
| SOVIET UNION | Signature | 30/10/1958 | |
| SOVIET UNION | Declaration | 22/11/1960 | |
| SOVIET UNION | Ratification | 22/11/1960 | |
| SOVIET UNION | Declaration | 05/11/1973 | |
| SPAIN | Accession | 25/02/1971 | |
| SWAZILAND | Accession | 16/10/1970 | |
| SWITZERLAND | Signature | 24/05/1958 | |
| SWITZERLAND | Ratification | 18/05/1966 | |
| THAILAND | Signature | 29/04/1958 | |
| THAILAND | Ratification | 02/07/1968 | |
| TONGA | Succession | 29/06/1971 | |
| TONGA | Objection | 29/06/1971 | |
| TONGA | Communication | 22/10/1971 | |
| TRINIDAD AND TOBAGO | Succession | 11/04/1966 | 31/08/1962 |
| TUNISIA | Signature | 30/10/1958 | |
| UGANDA | Accession | 14/09/1964 | |
| UKRAINE | Signature | 30/10/1958 | |
| UKRAINE | Ratification | 12/01/1961 | |
| UKRAINE | Declaration | 12/01/1961 | |
| UNITED KINGDOM | Signature | 09/09/1958 | |
| UNITED KINGDOM | Objection | 06/11/1959 | |
| UNITED KINGDOM | Declaration | 14/03/1960 | |
| UNITED KINGDOM | Ratification | 14/03/1960 | |
| UNITED KINGDOM | Objection | 05/04/1962 | |
| UNITED KINGDOM | Objection | 17/06/1965 | |
| UNITED KINGDOM | Objection | 02/11/1966 | |
| UNITED KINGDOM | Objection | 13/05/1975 | |
| UNITED KINGDOM | Declaration | 08/07/1975 | |
| UNITED KINGDOM | Objection | 10/01/1977 | |
| UNITED STATES OF AMERICA | Signature | 15/09/1958 | |
| UNITED STATES OF AMERICA | Ratification | 12/04/1961 | |
| UNITED STATES OF AMERICA | Objection | 19/09/1962 | |
| UNITED STATES OF AMERICA | Objection | 19/08/1965 | |
| UNITED STATES OF AMERICA | Objection | 28/09/1966 | |
| UNITED STATES OF AMERICA | Objection | 11/07/1974 | |
| UNITED STATES OF AMERICA | Declaration | 08/07/1975 | |
| UPPER VOLTA | Accession | 04/10/1965 | |
| URUGUAY | Signature | 29/04/1958 | |
| VATICAN CITY | Signature | 30/04/1958 | |
| VENEZUELA | Signature | 30/10/1958 | |
| VENEZUELA | Ratification | 15/08/1961 | |
| YUGOSLAVIA | Signature | 29/04/1958 | |
| YUGOSLAVIA | Ratification | 28/01/1966 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Succession | 12/03/2001 | 27/04/1992 |