| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRALIA | Ratification | 22/10/1970 | |
| AZERBAIJAN | Ratification | 19/05/1992 | |
| BYELORUSSIA S S R | Ratification | 21/08/1956 | |
| FINLAND | Ratification | 23/11/1989 | |
| GERMAN DEMOCRATIC REPUBLIC | Ratification | 14/07/1977 | 14/07/1978 |
| KYRGYZSTAN | Succession | 31/03/1992 | 31/03/1992 |
| LITHUANIA | Ratification | 26/09/1994 | 26/09/1995 |
| NEW ZEALAND | Ratification | 29/03/1938 | |
| Norfolk Island | Extension | 15/06/1973 | |
| NORWAY | Ratification | 13/03/1979 | 13/03/1980 |
| SOVIET UNION | Ratification | 23/06/1956 | |
| SWEDEN | Ratification | 11/08/1982 | |
| TAJIKISTAN | Succession | 26/11/1993 | 26/11/1993 |
| UKRAINE | Ratification | 10/08/1956 | |
| UNITED KINGDOM | |||
| UZBEKISTAN | Ratification | 13/07/1992 |