| Country | Action | Action Date | Effective Date |
|---|
| ALGERIA | Accession | 19/12/1966 | |
| AUSTRALIA | Accession | 18/04/1973 | 18/07/1973 |
| AUSTRIA | Accession | 22/08/1958 | |
| BANGLADESH | Accession | 01/07/1978 | 01/10/1978 |
| BELGIUM | Signature | 01/07/1955 | |
| BELGIUM | Ratification | 26/01/1960 | |
| BOTSWANA | Accession | 25/08/1978 | 25/11/1978 |
| BURKINA FASO | Accession | 15/06/1978 | 15/09/1978 |
| CYPRUS | Accession | 24/11/1972 | 24/02/1973 |
| CZECHOSLOVAKIA | Accession | 06/04/1982 | 06/07/1982 |
| DENMARK | Signature | 18/11/1955 | |
| DENMARK | Ratification | 06/03/1959 | |
| FINLAND | Accession | 27/01/1961 | |
| FRANCE | Signature | 24/12/1955 | |
| FRANCE | Ratification | 04/04/1959 | |
| GERMANY FEDERAL REPUBLIC | Signature | 29/11/1955 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 22/02/1960 | |
| GERMANY FEDERAL REPUBLIC | Denunciation | 27/12/1988 | 27/12/1989 |
| GREECE | Signature | 17/09/1955 | |
| GREECE | Ratification | 18/05/1965 | |
| Guernsey | Extension | 30/09/1958 | |
| HAITI | Accession | 12/03/1958 | |
| HUNGARY | Accession | 09/03/1978 | 09/06/1978 |
| ICELAND | Signature | 21/12/1955 | |
| IRAN | Accession | 16/10/1959 | |
| IRAN | Denunciation | 24/06/2003 | 24/06/2004 |
| IRELAND, REPUBLIC OF | Accession | 22/01/1963 | |
| Isle of Man | Extension | 30/09/1958 | |
| ISRAEL | Accession | 10/07/1970 | |
| ITALY | Signature | 03/11/1955 | |
| ITALY | Ratification | 23/12/1958 | |
| IVORY COAST | Accession | 08/12/1970 | |
| JAPAN | Accession | 01/07/1966 | |
| Jersey, Bailiwick of | Extension | 30/09/1958 | |
| KENYA | Accession | 13/03/1967 | |
| KOREA | Accession | 02/07/1968 | |
| Land Berlin | Extension | 03/10/1960 | 22/05/1960 |
| LEBANON | Accession | 10/12/1981 | 10/03/1982 |
| LEBANON | Denunciation | 16/12/2002 | 16/12/2003 |
| LESOTHO | Accession | 11/09/1980 | 11/12/1980 |
| LESOTHO | Declaration | 11/09/1980 | |
| LUXEMBOURG | Signature | 17/10/1955 | |
| LUXEMBOURG | Ratification | 26/01/1960 | |
| MALAYSIA | Accession | 30/03/1979 | 30/06/1979 |
| MAURITANIA | Accession | 02/10/1979 | |
| MAURITIUS | Accession | 06/07/1981 | 06/10/1981 |
| MOROCCO | Accession | 01/07/1968 | |
| MOROCCO | Ratification | 21/10/2003 | |
| NETHERLANDS THE | Signature | 30/12/1955 | |
| NETHERLANDS THE | Ratification | 31/12/1959 | |
| NEW ZEALAND | Accession | 24/08/1967 | 24/11/1967 |
| NIGERIA | Accession | 12/10/1972 | 12/01/1973 |
| NORWAY | Signature | 23/12/1955 | |
| NORWAY | Ratification | 11/06/1959 | |
| PAKISTAN | Accession | 14/11/1980 | 14/02/1981 |
| PORTUGAL | Signature | 28/11/1955 | |
| PORTUGAL | Ratification | 10/06/1960 | |
| RWANDA | Accession | 01/05/1965 | |
| SAUDI ARABIA | Accession | 15/01/1982 | 15/04/1982 |
| SENEGAL | Accession | 16/10/1978 | 16/01/1979 |
| SOUTH AFRICA | Accession | 06/08/1970 | |
| SOUTH AFRICA | Denunciation | 06/07/1988 | 06/07/1989 |
| SPAIN | Accession | 12/06/1961 | |
| SWAZILAND | Accession | 15/05/1981 | 15/08/1981 |
| SWEDEN | Signature | 09/12/1955 | |
| SWEDEN | Ratification | 16/10/1958 | |
| SWITZERLAND | Accession | 28/12/1959 | |
| TANZANIA | Accession | 23/06/1970 | |
| TUNISIA | Accession | 20/07/1966 | |
| TURKEY | Signature | 12/11/1955 | |
| TURKEY | Ratification | 15/08/1957 | |
| UGANDA | Accession | 27/11/1967 | |
| UNITED KINGDOM | Signature | 01/07/1955 | |
| UNITED KINGDOM | Signature | 25/11/1955 | |
| UNITED KINGDOM | Ratification | 30/09/1958 | |
| YUGOSLAVIA | Accession | 03/10/1962 | |
| ZAIRE | Accession | 13/02/1975 | 13/05/1975 |
| ZIMBABWE | Accession | 02/08/1983 | 02/11/1983 |