| Country | Action | Action Date | Effective Date |
|---|
| ALGERIA | Accession | 13/04/1964 | 12/07/1964 |
| ANGOLA | Ratification | 24/02/1998 | 25/05/1998 |
| ARGENTINA | Signature | 07/10/1952 | |
| ARGENTINA | Ratification | 26/09/1972 | 25/12/1972 |
| AUSTRALIA | Signature | 20/10/1953 | |
| AUSTRALIA | Ratification | 10/11/1958 | 08/02/1959 |
| AZERBAIJAN | Adherence | 23/03/2000 | 21/06/2000 |
| BAHRAIN | Adherence | 03/03/1997 | 01/06/1997 |
| BELGIUM | Signature | 07/10/1952 | |
| BELGIUM | Ratification | 11/08/1966 | 09/11/1966 |
| BOLIVIA | Adherence | 09/07/1998 | 07/10/1998 |
| BRAZIL | Signature | 07/10/1952 | |
| BRAZIL | Ratification | 19/12/1962 | 19/03/1963 |
| CAMEROON | Accession | 23/07/1969 | 21/10/1969 |
| CANADA | Signature | 26/05/1954 | |
| CANADA | Ratification | 16/01/1956 | |
| CANADA | Denunciation | 29/06/1976 | 29/12/1976 |
| CEYLON | Accession | 31/03/1959 | 29/06/1959 |
| CUBA | Accession | 08/09/1965 | 07/12/1965 |
| DENMARK | Signature | 07/10/1952 | |
| DOMINICAN REPUBLIC | Signature | 07/10/1952 | |
| ECUADOR | Accession | 12/05/1958 | 10/08/1958 |
| EGYPT | Signature | 07/10/1952 | |
| EGYPT | Ratification | 23/02/1954 | 04/02/1958 |
| EL SALVADOR | Accession | 13/02/1980 | 13/05/1980 |
| FRANCE | Signature | 07/10/1952 | |
| GABON | Accession | 14/01/1970 | 14/04/1970 |
| GAMBIA THE | Adherence | 20/06/2000 | 18/09/2000 |
| GREECE | Signature | 05/04/1955 | |
| GUATEMALA | Accession | 10/05/1983 | 08/08/1983 |
| GUINEA | Accession | 28/05/1990 | 26/08/1990 |
| HAITI | Accession | 24/03/1961 | 22/06/1961 |
| HONDURAS | Accession | 05/10/1960 | 03/01/1961 |
| INDIA | Signature | 02/08/1955 | |
| IRAQ | Accession | 19/07/1972 | 17/10/1972 |
| ISRAEL | Signature | 07/10/1952 | |
| ITALY | Signature | 07/10/1952 | |
| ITALY | Ratification | 10/10/1963 | 08/01/1964 |
| KUWAIT | Accession | 27/11/1979 | 25/02/1980 |
| KUWAIT | Declaration | 27/11/1979 | |
| LIBERIA | Signature | 07/10/1952 | |
| LIBYA | Signature | 11/08/1954 | |
| LUXEMBOURG | Signature | 07/10/1952 | |
| LUXEMBOURG | Ratification | 19/02/1957 | 04/02/1958 |
| MALDIVES | Accession | 05/09/1995 | 04/12/1995 |
| MALI | Accession | 28/12/1961 | 28/03/1962 |
| MAURITANIA | Accession | 23/07/1962 | 21/10/1962 |
| MEXICO | Signature | 07/10/1952 | |
| MOLDOVA REPUBLIC OF | Adherence | 31/10/2000 | 29/01/2001 |
| MOROCCO | Accession | 31/03/1964 | 29/06/1964 |
| NETHERLANDS THE | Signature | 07/10/1952 | |
| New Guinea | Extension | 10/11/1958 | 08/02/1959 |
| NIGER | Accession | 27/12/1962 | 27/03/1963 |
| NIGERIA | Accession | 06/03/1970 | 04/06/1970 |
| NORWAY | Signature | 10/12/1954 | |
| OMAN | Adherence | 06/08/2003 | 04/11/2003 |
| PAKISTAN | Signature | 25/02/1957 | |
| PAKISTAN | Ratification | 06/11/1957 | 04/02/1958 |
| Papua | Extension | 10/11/1958 | 08/02/1959 |
| PAPUA NEW GUINEA | Succession | 15/12/1975 | 16/09/1975 |
| PAPUA NEW GUINEA | Declaration | 15/12/1975 | |
| PARAGUAY | Accession | 26/05/1969 | 24/08/1969 |
| PHILIPPINES | Signature | 07/10/1952 | |
| PORTUGAL | Signature | 07/10/1952 | |
| RWANDA | Accession | 17/05/1971 | 15/08/1971 |
| SEYCHELLES | Accession | 15/09/1980 | 14/12/1980 |
| SOVIET UNION | Accession | 21/04/1982 | 20/07/1982 |
| SOVIET UNION | Declaration | 21/04/1982 | |
| SPAIN | Signature | 07/10/1952 | |
| SPAIN | Ratification | 01/03/1957 | 04/02/1958 |
| SURINAME | Ratification | 27/03/2003 | 01/01/1900 |
| SWEDEN | Signature | 11/08/1954 | |
| SWITZERLAND | Signature | 07/10/1952 | |
| THAILAND | Signature | 07/10/1952 | |
| TOGO | Accession | 02/07/1980 | 30/09/1980 |
| TUNISIA | Accession | 16/09/1963 | 15/12/1963 |
| UNITED ARAB EMIRATES | Accession | 12/02/1990 | 13/05/1990 |
| UNITED KINGDOM | Signature | 23/04/1953 | |
| URUGUAY | Accession | 08/11/1978 | 06/02/1979 |
| VANUATU | Accession | 15/01/1982 | 15/04/1982 |
| YEMEN | Accession | 26/09/1986 | 25/12/1986 |