| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Signature | 25/11/1959 | |
| BELGIUM | Acceptance | 12/02/1960 | |
| FRANCE | Acceptance | 01/01/1905 | |
| FRANCE | Signature | 25/11/1959 | |
| GERMANY FEDERAL REPUBLIC | Signature | 25/11/1959 | |
| GERMANY FEDERAL REPUBLIC | Acceptance | 09/11/1962 | |
| GREECE | Signature | 25/11/1959 | |
| ITALY | Signature | 25/11/1959 | |
| ITALY | Acceptance | 19/03/1962 | |
| LUXEMBOURG | Signature | 25/11/1959 | |
| LUXEMBOURG | Acceptance | 26/09/1960 | |
| NETHERLANDS THE | Signature | 25/11/1959 | |
| NETHERLANDS THE | Acceptance | 21/04/1961 | |
| NORWAY | Signature | 25/11/1959 | |
| NORWAY | Acceptance | 26/04/1960 | |
| SWEDEN | Signature | 25/11/1959 | |
| SWEDEN | Acceptance | 21/01/1960 | |
| UNITED KINGDOM | Signature | 25/11/1959 | |
| UNITED KINGDOM | Acceptance | 25/02/1960 | |