| Country | Action | Action Date | Effective Date |
|---|
| AUSTRIA | Signature | 19/04/1972 | |
| AUSTRIA | Ratification | 09/11/1972 | 10/02/1973 |
| DENMARK | Signature | 25/10/1967 | |
| FRANCE | Signature | 30/11/1967 | |
| FRANCE | Acceptance | 03/09/1974 | 04/12/1974 |
| GERMANY FEDERAL REPUBLIC | Signature | 25/10/1967 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 08/02/1973 | |
| GREECE | Signature | 25/10/1967 | |
| IRELAND, REPUBLIC OF | Signature | 07/12/1971 | |
| ITALY | Signature | 06/11/1968 | |
| ITALY | Ratification | 07/06/1974 | 08/09/1974 |
| MALTA | Signature | 07/05/1968 | |
| MALTA | Ratification | 06/05/1969 | 07/08/1969 |
| POLAND | Signature | 06/02/1995 | |
| POLAND | Ratification | 30/01/1996 | 01/05/1996 |
| POLAND | Declaration | 30/01/1996 | |
| SWITZERLAND | Signature | 25/09/1968 | |
| SWITZERLAND | Ratification | 19/08/1970 | |
| TURKEY | Signature | 11/09/1968 | |
| UNITED KINGDOM | Signature | 21/12/1967 | |