| Country | Action | Action Date | Effective Date |
|---|
| Antilles | Extension | 01/01/1986 | 01/01/1986 |
| Aruba | Extension | 01/01/1986 | 01/01/1986 |
| AUSTRALIA | Signature | 13/02/1953 | |
| AUSTRALIA | Declaration | 04/08/1975 | 03/09/1975 |
| BELGIUM | Signature | 08/11/1952 | |
| BRAZIL | Signature | 19/02/1953 | |
| CANADA | Signature | 16/04/1953 | |
| CEYLON | Signature | 08/11/1952 | |
| CHILE | Signature | 02/02/1959 | |
| CZECHOSLOVAKIA | Signature | 15/04/1953 | |
| DENMARK | Signature | 04/06/1953 | |
| DOMINICAN REPUBLIC | Signature | 08/11/1952 | |
| FINLAND | Signature | 02/02/1953 | |
| FRANCE | Signature | 08/11/1952 | |
| GREECE | Signature | 08/11/1952 | |
| HAITI | Signature | 06/04/1953 | |
| INDIA | Signature | 10/03/1953 | |
| INDONESIA | Signature | 09/01/1953 | |
| ITALY | Signature | 08/11/1952 | |
| LUXEMBOURG | Signature | 08/11/1952 | |
| NETHERLANDS THE | Signature | 05/05/1953 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | 01/01/1986 |
| NICARAGUA | Extension | 30/06/1953 | |
| NORWAY | Signature | 08/11/1952 | |
| PAKISTAN | Signature | 11/02/1953 | |
| Papua New Guinea | Extension | 04/08/1975 | 03/09/1975 |
| PERU | Signature | 23/08/1956 | |
| Southern Rhodesia | Signature | 05/05/1953 | |
| SWEDEN | Signature | 08/11/1952 | |
| TURKEY | Signature | 07/07/1953 | |
| UNITED KINGDOM | Signature | 08/11/1952 | |
| UNITED STATES OF AMERICA | Signature | 08/11/1952 | |
| URUGUAY | Signature | 16/11/1953 | |