| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| GERMANY FEDERAL REPUBLIC | Signature | 07/02/1969 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 21/10/1969 | 21/12/1969 |
| UNITED KINGDOM | Signature | 07/02/1969 | |
| UNITED KINGDOM | Ratification | 21/11/1969 | |
| UNITED KINGDOM | Ratification | 21/11/1969 | 21/12/1969 |
| UNITED STATES OF AMERICA | Approval | 21/11/1969 |