| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Signature | 14/05/1962 | |
| BELGIUM | Ratification | 20/01/1964 | |
| DENMARK | Definitive Signature | 13/09/1962 | |
| DENMARK | Reservation | 13/09/1962 | |
| GERMANY FEDERAL REPUBLIC | Signature | 26/06/1962 | |
| GREECE | Signature | 14/05/1962 | |
| IRELAND, REPUBLIC OF | Definitive Signature | 14/05/1962 | |
| ITALY | Signature | 14/05/1962 | |
| ITALY | Ratification | 29/12/1966 | |
| LUXEMBOURG | Signature | 14/05/1962 | |
| NORWAY | Signature | 25/06/1963 | |
| NORWAY | Ratification | 12/06/1964 | |
| SWEDEN | Definitive Signature | 14/05/1962 | |
| SWEDEN | Declaration | 14/05/1962 | |
| TURKEY | Signature | 14/05/1962 | |
| TURKEY | Ratification | 27/11/1964 | |
| UNITED KINGDOM | Signature | 14/05/1962 | |
| UNITED KINGDOM | Ratification | 14/05/1962 | |
| UNITED KINGDOM | Definitive Signature | 14/05/1962 | |
| UNITED KINGDOM | Declaration | 14/05/1962 | |