| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Signature | 06/06/1947 | |
| BELGIUM | Ratification | 10/06/1949 | |
| BELGIUM | Denunciation | 31/12/1978 | |
| FRANCE | Signature | 06/06/1947 | |
| FRANCE | Ratification | 16/07/1948 | |
| LUXEMBOURG | Signature | 06/06/1947 | |
| LUXEMBOURG | Ratification | 14/02/1949 | |
| LUXEMBOURG | Denunciation | 31/12/1978 | |
| MONACO | Accession | 02/08/1956 | |
| MOROCCO | Denunciation | | 28/04/1970 |
| MOROCCO | Accession | 01/01/1956 | |
| NETHERLANDS THE | Signature | 06/06/1947 | |
| NETHERLANDS THE | Ratification | 20/01/1949 | |
| NETHERLANDS THE | Denunciation | 31/12/1979 | |
| SWITZERLAND | Accession | 01/01/1960 | |
| TUNISIA | Withdrawal | | 08/03/1962 |
| TUNISIA | Accession | 30/03/1955 | |
| TURKEY | Accession | 23/09/1955 | |
| UNITED KINGDOM | Accession | 02/08/1965 | |
| UNITED KINGDOM | Denunciation | 22/12/1978 | 31/12/1979 |