| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BULGARIA | Adherence | 21/08/1972 | |
| CANADA | Signature | 15/07/1963 | |
| CANADA | Ratification | 23/01/1964 | |
| CUBA | Adherence | 28/11/1975 | |
| DENMARK | Signature | 26/07/1963 | |
| DENMARK | Ratification | 27/07/1964 | |
| FRANCE | Signature | 21/07/1964 | |
| GERMAN DEMOCRATIC REPUBLIC | Adherence | 21/05/1974 | |
| GERMANY FEDERAL REPUBLIC | Accession | 26/05/1965 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 26/05/1965 | |
| ICELAND | Signature | 22/07/1963 | |
| ICELAND | Ratification | 23/03/1964 | |
| ITALY | Signature | 26/07/1963 | |
| ITALY | Ratification | 29/04/1966 | |
| JAPAN | Accession | 01/07/1970 | |
| Land Berlin | Extension | 26/05/1965 | |
| NORWAY | Signature | 19/07/1963 | |
| NORWAY | Ratification | 03/12/1963 | |
| POLAND | Signature | 16/07/1963 | |
| POLAND | Ratification | 05/01/1966 | |
| PORTUGAL | Signature | 29/07/1963 | |
| PORTUGAL | Ratification | 02/10/1964 | |
| ROMANIA | Accession | 21/03/1967 | |
| SOVIET UNION | Signature | 18/07/1963 | |
| SOVIET UNION | Ratification | 13/04/1964 | |
| SPAIN | Signature | 25/07/1963 | |
| SPAIN | Ratification | 17/08/1964 | |
| UNITED KINGDOM | Signature | 20/07/1963 | |
| UNITED KINGDOM | Ratification | 08/05/1964 | |
| UNITED STATES OF AMERICA | Signature | 26/07/1963 | |
| UNITED STATES OF AMERICA | Ratification | 13/07/1964 |