| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Accession | 27/09/1973 | |
| AUSTRIA | Accession | 20/02/1968 | |
| BELGIUM | Signature | 16/11/1966 | |
| BELGIUM | Ratification | 09/05/1968 | |
| BRAZIL | Accession | 05/11/1970 | |
| BULGARIA | Signature | 16/11/1966 | |
| BYELORUSSIA S S R | Signature | 30/12/1966 | |
| CANADA | Signature | 16/11/1966 | |
| CZECHOSLOVAKIA | Signature | 30/11/1966 | |
| DENMARK | Signature | 16/11/1966 | |
| FINLAND | Signature | 16/11/1966 | |
| FINLAND | Ratification | 23/02/1968 | |
| FRANCE | Signature | 16/11/1966 | |
| GERMANY FEDERAL REPUBLIC | Signature | 16/11/1966 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 11/09/1968 | |
| GREECE | Signature | 16/11/1966 | |
| HUNGARY | Signature | 16/12/1966 | |
| HUNGARY | Ratification | 21/03/1967 | |
| ISRAEL | Signature | 14/12/1966 | |
| JAPAN | Signature | 16/11/1966 | |
| JAPAN | Ratification | 17/07/1967 | |
| LEBANON | Signature | 28/12/1966 | |
| MONACO | Signature | 15/12/1966 | |
| MOROCCO | Signature | 16/11/1966 | |
| NETHERLANDS THE | Accession | 23/10/1968 | |
| NEW ZEALAND | Signature | 16/11/1966 | |
| NIGERIA | Signature | 20/12/1966 | |
| NORWAY | Signature | 16/11/1966 | |
| PHILIPPINES | Adherence | 12/08/1993 | |
| POLAND | Signature | 16/11/1966 | |
| POLAND | Ratification | 23/07/1968 | |
| PORTUGAL | Signature | 12/12/1966 | |
| ROMANIA | Signature | 16/11/1966 | |
| ROMANIA | Ratification | 15/07/1968 | |
| SLOVAK REPUBLIC | Adherence | 08/07/1993 | |
| SOUTH AFRICA | Accession | 01/09/1993 | |
| SOVIET UNION | Signature | 16/11/1966 | |
| SPAIN | Accession | 03/11/1971 | 03/12/1971 |
| SWEDEN | Signature | 16/11/1966 | |
| SWITZERLAND | Signature | 16/11/1966 | |
| SWITZERLAND | Ratification | 10/11/1967 | |
| TUNISIA | Signature | 14/12/1966 | |
| UKRAINE | Signature | 16/11/1966 | |
| UNITED KINGDOM | Signature | 16/11/1966 | |
| UNITED KINGDOM | Definitive Signature | 16/11/1966 | |
| UNITED STATES OF AMERICA | Accession | 24/05/1968 | |
| URUGUAY | Accession | 10/06/1983 | |