| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BELGIUM | Definitive Signature | 20/12/1963 | |
| DENMARK | Definitive Signature | 07/01/1964 | |
| FRANCE | Definitive Signature | 13/12/1963 | |
| GERMANY | Definitive Signature | 13/12/1963 | |
| ITALY | Definitive Signature | 13/12/1963 | |
| NETHERLANDS THE | Definitive Signature | 13/12/1963 | |
| SPAIN | Definitive Signature | 13/12/1963 | |
| SWEDEN | Definitive Signature | 30/12/1963 | |
| SWITZERLAND | Definitive Signature | 13/12/1963 | |
| UNITED KINGDOM | Signature | 13/12/1963 | |
| UNITED KINGDOM | Definitive Signature | 13/12/1963 |