| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRALIA | Definitive Signature | 09/05/1962 | |
| BELGIUM | Definitive Signature | 09/05/1962 | |
| FRANCE | Definitive Signature | 09/05/1962 | |
| GERMANY FEDERAL REPUBLIC | Definitive Signature | 09/05/1962 | |
| ITALY | Definitive Signature | 09/05/1962 | |
| NETHERLANDS THE | Definitive Signature | 09/05/1962 | |
| UNITED KINGDOM | Signature | 09/05/1962 | |
| UNITED KINGDOM | Definitive Signature | 09/05/1962 |