| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Signature | 28/11/1963 | |
| BELGIUM | Ratification | 16/07/1971 | |
| DENMARK | Signature | 31/10/1963 | |
| DENMARK | Ratification | 27/06/1964 | |
| FRANCE | Signature | 31/10/1963 | |
| FRANCE | Ratification | 11/01/1967 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/01/1905 | |
| GERMANY FEDERAL REPUBLIC | Signature | 30/01/1964 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 30/01/1964 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 11/02/1966 | |
| ITALY | Signature | 31/10/1963 | |
| ITALY | Ratification | 23/02/1968 | |
| Land Berlin | Extension | 01/01/1905 | |
| NETHERLANDS THE | Signature | 31/10/1963 | |
| NETHERLANDS THE | Ratification | 23/06/1964 | |
| SPAIN | Signature | 31/10/1963 | |
| SPAIN | Ratification | 17/05/1965 | |
| SWEDEN | Signature | 31/10/1963 | |
| SWEDEN | Ratification | 07/03/1964 | |
| SWITZERLAND | Signature | 31/10/1963 | |
| SWITZERLAND | Ratification | 27/01/1967 | |
| UNITED KINGDOM | Signature | 31/10/1963 | |
| UNITED KINGDOM | Ratification | 08/10/1966 | |