| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| FRANCE | Signature | 03/08/1959 | |
| FRANCE | Ratification | 24/01/1962 | |
| 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 | |
| UNITED STATES OF AMERICA | Signature | 03/08/1959 | |
| UNITED STATES OF AMERICA | Approval | 17/08/1961 |