| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| JAPAN | Signature | 06/06/1962 | |
| JAPAN | Ratification | 05/11/1962 | |
| NETHERLANDS THE | Signature | 06/06/1962 | |
| NETHERLANDS THE | Ratification | 22/02/1963 | |
| NORWAY | Signature | 06/06/1962 | |
| NORWAY | Ratification | 25/10/1962 | |
| SOVIET UNION | Signature | 06/06/1962 | |
| SOVIET UNION | Ratification | 13/04/1963 | |
| UNITED KINGDOM | Signature | 06/06/1962 | |
| UNITED KINGDOM | Ratification | 27/11/1962 | |
| UNITED KINGDOM | Notification | 03/07/1997 | 01/07/1997 |