| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AFGHANISTAN | Definitive Signature | 11/12/1946 | |
| ALBANIA | Ratification | 23/06/1947 | |
| ALGERIA | Acceptance | 31/10/1963 | |
| Antilles | Extension | 01/01/1986 | |
| ARGENTINA | Definitive Signature | 11/12/1946 | |
| Aruba | Extension | 01/01/1986 | |
| AUSTRALIA | Signature | 11/12/1946 | |
| AUSTRALIA | Acceptance | 28/08/1947 | |
| AUSTRIA | Acceptance | 17/05/1950 | |
| Bahamas | Extension | 07/03/1949 | 05/06/1949 |
| BAHAMAS | Succession | 13/08/1975 | |
| BELGIUM | Definitive Signature | 11/12/1946 | |
| BOLIVIA | Definitive Signature | 14/12/1946 | |
| BRAZIL | Definitive Signature | 17/12/1946 | |
| BYELORUSSIA S S R | Definitive Signature | 11/12/1946 | |
| CANADA | Definitive Signature | 11/12/1946 | |
| CEYLON | Acceptance | 04/12/1957 | |
| CHILE | Definitive Signature | 11/12/1946 | |
| CHINA | Definitive Signature | 11/12/1946 | |
| COLOMBIA | Definitive Signature | 11/12/1946 | |
| CONGO, DEMOCRATIC REPUBLIC OF | Acceptance | 31/05/1962 | |
| COSTA RICA | Signature | 11/12/1946 | |
| CUBA | Signature | 12/12/1946 | |
| CUBA | Acceptance | 09/08/1967 | |
| CUBA | Declaration | 09/08/1967 | |
| CZECH REPUBLIC | Succession | 30/12/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 11/12/1946 | |
| DENMARK | Signature | 11/12/1946 | |
| DENMARK | Acceptance | 15/06/1949 | |
| DOMINICAN REPUBLIC | Definitive Signature | 11/12/1946 | |
| ECUADOR | Signature | 14/12/1946 | |
| ECUADOR | Acceptance | 08/06/1951 | |
| EGYPT | Signature | 11/12/1946 | |
| EGYPT | Acceptance | 13/09/1948 | |
| ETHIOPIA | Acceptance | 09/09/1947 | |
| FIJI | Succession | 01/11/1971 | |
| FINLAND | Acceptance | 03/02/1948 | |
| FRANCE | Signature | 11/12/1946 | |
| FRANCE | Acceptance | 10/10/1947 | |
| GERMANY FEDERAL REPUBLIC | Acceptance | 12/08/1959 | |
| GHANA | Acceptance | 07/04/1958 | |
| Gilbert & Ellice Colony | Extension | 05/04/1949 | 04/07/1949 |
| GREECE | Signature | 11/12/1946 | |
| GREECE | Acceptance | 21/02/1949 | |
| GUATEMALA | Signature | 13/12/1946 | |
| GUINEA | Acceptance | 26/04/1962 | |
| HAITI | Signature | 14/12/1946 | |
| HAITI | Acceptance | 31/05/1951 | |
| HONDURAS | Definitive Signature | 11/12/1946 | |
| HUNGARY | Acceptance | 16/12/1955 | |
| INDIA | Definitive Signature | 11/12/1946 | |
| INDONESIA | Acceptance | 03/04/1958 | |
| IRAN | Definitive Signature | 11/12/1946 | |
| IRAQ | Signature | 12/12/1946 | |
| IRAQ | Acceptance | 14/09/1950 | |
| IRELAND, REPUBLIC OF | Signature | 11/12/1946 | |
| IRELAND, REPUBLIC OF | Acceptance | 18/02/1948 | |
| ITALY | Definitive Signature | 25/03/1948 | |
| Jamaica | Extension | 07/03/1949 | 05/06/1949 |
| JAMAICA | Acceptance | 26/12/1963 | |
| JAPAN | Declaration | 21/10/1948 | |
| JAPAN | Acceptance | 27/03/1952 | |
| JORDAN | Acceptance | 07/05/1958 | |
| Land Berlin | Extension | 12/08/1959 | |
| LEBANON | Definitive Signature | 13/12/1946 | |
| LESOTHO | Succession | 04/11/1974 | |
| LIBERIA | Definitive Signature | 11/12/1946 | |
| LIECHTENSTEIN | Acceptance | 25/09/1947 | |
| LUXEMBOURG | Signature | 11/12/1946 | |
| LUXEMBOURG | Acceptance | 13/10/1949 | |
| MADAGASCAR | Accession | 11/12/1974 | 11/03/1975 |
| MALAYA | Acceptance | 31/08/1957 | |
| Malta | Extension | 07/03/1949 | 05/06/1949 |
| MAURITIUS | Acceptance | 18/07/1969 | 12/03/1968 |
| MEXICO | Definitive Signature | 11/12/1946 | |
| MONACO | Definitive Signature | 21/11/1947 | |
| NETHERLANDS THE | Denunciation | 01/01/1905 | 14/12/1966 |
| NETHERLANDS THE | Signature | 11/12/1946 | |
| NETHERLANDS THE | Acceptance | 10/03/1948 | |
| Netherlands West Indies | Extension | 07/03/1949 | 05/06/1949 |
| New Hebrides | Extension | 17/03/1950 | 15/06/1950 |
| NEW ZEALAND | Definitive Signature | 11/12/1946 | |
| NICARAGUA | Signature | 13/12/1946 | |
| NICARAGUA | Acceptance | 24/04/1950 | |
| NIGER | Acceptance | 25/08/1961 | |
| NIGERIA | Declaration | 26/06/1961 | |
| NORWAY | Signature | 11/12/1946 | |
| NORWAY | Acceptance | 02/07/1947 | |
| PAKISTAN | Signature | 11/12/1946 | |
| PANAMA | Definitive Signature | 15/12/1946 | |
| PAPUA NEW GUINEA | Succession | 28/10/1980 | |
| PARAGUAY | Signature | 14/12/1946 | |
| PERU | Signature | 26/11/1948 | |
| PERU | Ratification | 26/11/1948 | |
| PHILIPPINES | Signature | 11/12/1946 | |
| PHILIPPINES | Acceptance | 25/05/1950 | |
| POLAND | Definitive Signature | 11/12/1946 | |
| ROUMANIA | Acceptance | 11/10/1961 | |
| SAUDI ARABIA | Definitive Signature | 11/12/1946 | |
| SENEGAL | Acceptance | 02/05/1963 | |
| SIERRA LEONE | Acceptance | 13/03/1962 | |
| SLOVAK REPUBLIC | Succession | 28/05/1993 | 01/01/1993 |
| Somaliland | Extension | 12/03/1954 | |
| SOUTH AFRICA | Signature | 15/12/1946 | |
| SOUTH AFRICA | Acceptance | 24/02/1948 | |
| SOVIET UNION | Signature | 11/12/1946 | |
| SOVIET UNION | Acceptance | 25/10/1947 | |
| SPAIN | Definitive Signature | 26/09/1955 | |
| St Lucia | Extension | 07/03/1949 | 05/06/1949 |
| SWEDEN | Definitive Signature | 17/10/1947 | |
| SWEDEN | Ratification | 05/06/1970 | |
| SWITZERLAND | Acceptance | 25/09/1947 | |
| SYRIA | Definitive Signature | 11/12/1946 | |
| THAILAND | Definitive Signature | 27/10/1947 | |
| TURKEY | Definitive Signature | 11/12/1946 | |
| UKRAINE S S R | Signature | 11/12/1946 | |
| UKRAINE S S R | Acceptance | 08/01/1948 | |
| UNITED KINGDOM | Signature | 11/12/1946 | |
| UNITED KINGDOM | Definitive Signature | 11/12/1946 | |
| UNITED STATES OF AMERICA | Signature | 11/12/1946 | |
| UNITED STATES OF AMERICA | Acceptance | 12/08/1947 | |
| URUGUAY | Signature | 14/12/1946 | |
| VENEZUELA | Signature | 11/12/1946 | |
| YUGOSLAVIA | Signature | 11/12/1946 | |
| YUGOSLAVIA | Acceptance | 19/05/1948 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Succession | 31/07/2002 | 27/04/1992 |
| ZAMBIA | Succession | 09/04/1973 | 24/10/1964 |