| Country | Action | Action Date | Effective Date |
|---|
| Aruba | Extension | 01/01/1996 | 01/01/1996 |
| AUSTRIA | Signature | 05/01/1970 | |
| AUSTRIA | Ratification | 08/03/1971 | |
| BELGIUM | Signature | 05/09/1967 | |
| BELGIUM | Ratification | 02/12/1969 | |
| CYPRUS | Accession | 26/10/1973 | 25/11/1973 |
| DENMARK | Ratification | 07/06/1972 | |
| FINLAND | Signature | 10/07/1967 | |
| FINLAND | Ratification | 30/04/1968 | |
| FRANCE | Signature | 10/07/1967 | |
| FRANCE | Approval | 04/08/1967 | |
| GREECE | Signature | 10/07/1967 | |
| GREECE | Ratification | 31/05/1971 | |
| IRELAND, REPUBLIC OF | Signature | 10/07/1967 | |
| IRELAND, REPUBLIC OF | Ratification | 15/03/1968 | |
| ITALY | Signature | 05/08/1968 | |
| ITALY | Ratification | 20/01/1976 | 19/02/1976 |
| NETHERLANDS THE | Signature | 12/01/1968 | |
| NETHERLANDS THE | Ratification | 21/11/1968 | |
| NORWAY | Ratification | 07/06/1972 | |
| PORTUGAL | Signature | 10/07/1967 | |
| PORTUGAL | Ratification | 08/03/1968 | |
| SPAIN | Signature | 10/07/1967 | |
| SPAIN | Ratification | 14/02/1969 | |
| SWEDEN | Ratification | 07/06/1972 | |
| UNITED KINGDOM | Signature | 10/07/1967 | |
| UNITED KINGDOM | Ratification | 04/04/1968 | |