| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| CANADA | Signature | 03/08/1959 | |
| CANADA | Ratification | 10/01/1963 | |
| GERMANY FEDERAL REPUBLIC | Signature | 03/08/1959 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 21/05/1963 | |
| UNITED KINGDOM | Signature | 03/08/1959 | |
| UNITED KINGDOM | Ratification | 09/07/1962 |