| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| FRANCE | Signature | 21/06/1960 | |
| FRANCE | Approval | 27/12/1960 | |
| FRANCE | Withdrawal | 22/12/1964 | 31/12/1965 |
| NETHERLANDS THE | Signature | 21/06/1960 | |
| NETHERLANDS THE | Acceptance | 25/08/1961 | |
| UNITED KINGDOM | Signature | 21/06/1960 | |
| UNITED KINGDOM | Signature | 21/10/1960 | |
| UNITED KINGDOM | Acceptance | 12/01/1961 | |
| UNITED KINGDOM | Withdrawal | 31/12/1964 | 31/12/1965 |
| UNITED STATES OF AMERICA | Signature | 21/06/1960 | |
| UNITED STATES OF AMERICA | Acceptance | 12/07/1961 | |
| UNITED STATES OF AMERICA | Withdrawal | 29/12/1965 | 31/12/1965 |