| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Signature | 14/06/1962 | |
| BELGIUM | Ratification | 21/03/1964 | |
| DENMARK | Signature | 20/12/1962 | |
| DENMARK | Ratification | 13/03/1964 | |
| FRANCE | Signature | 14/06/1962 | |
| FRANCE | Ratification | 17/01/1964 | |
| FRANCE | Denunciation | 30/12/1970 | 01/01/1972 |
| FRANCE | Withdrawn | 27/12/1971 | |
| GERMANY FEDERAL REPUBLIC | Signature | 14/06/1962 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 24/02/1964 | |
| ITALY | Signature | 14/06/1962 | |
| ITALY | Ratification | 18/03/1965 | |
| SPAIN | Signature | 14/06/1962 | |
| SPAIN | Ratification | 18/01/1964 | |
| SWEDEN | Signature | 14/06/1962 | |
| SWEDEN | Ratification | 07/03/1964 | |
| SWITZERLAND | Signature | 14/06/1962 | |
| SWITZERLAND | Ratification | 16/04/1963 | |
| UNITED KINGDOM | Signature | 14/06/1962 | |
| UNITED KINGDOM | Ratification | 30/08/1963 | |