| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Antilles And Suriname | Extension | 29/10/1969 | |
| AUSTRALIA | Accession | 09/05/1986 | |
| BAHAMAS | Succession | 17/03/1977 | |
| BELGIUM | Application | 23/12/2002 | 23/12/2002 |
| BRAZIL | Accession | 11/02/1969 | |
| BULGARIA | Accession | 02/12/1968 | |
| CHINA | Accession | 11/09/1979 | |
| DENMARK | Accession | 20/03/1969 | |
| FIJI | Succession | 21/06/1971 | |
| FINLAND | Accession | 24/11/1969 | |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 04/10/1974 | |
| GERMANY FEDERAL REPUBLIC | Accession | 11/06/1985 | |
| GREECE | Accession | 21/06/1977 | |
| IRAN | Accession | 16/05/1974 | |
| IRELAND, REPUBLIC OF | Accession | 27/12/1968 | |
| ITALY | Accession | 30/08/1985 | |
| KUWAIT | Accession | 09/07/1969 | |
| MADAGASCAR | Accession | 19/11/1968 | |
| MALTA | Accession | 21/10/1968 | |
| MAURITIUS | Succession | 18/07/1969 | |
| NETHERLANDS THE | Accession | 29/10/1969 | |
| NEW ZEALAND | Accession | 06/06/1969 | |
| NORWAY | Accession | 01/10/1968 | |
| POLAND | Accession | 19/06/1969 | |
| ROMANIA | Accession | 15/09/1970 | |
| SAINT LUCIA | Accession | 02/09/1986 | |
| SEYCHELLES | Accession | 24/07/1985 | |
| SPAIN | Accession | 26/09/1974 | |
| SWEDEN | Accession | 13/09/1968 | |
| TONGA | Succession | 17/03/1976 | |
| UNITED KINGDOM | Accession | 28/11/1968 | |
| ZAMBIA | Succession | 16/06/1975 |