| Country | Action | Action Date | Effective Date |
|---|
| Antilles | Extension | 01/01/1986 | 01/01/1986 |
| Aruba | Extension | 01/01/1986 | 01/01/1986 |
| AUSTRALIA | Signature | 18/10/1951 | |
| AUSTRALIA | Declaration | 04/08/1975 | 03/09/1975 |
| AUSTRIA | Signature | 19/09/1951 | |
| BRAZIL | Signature | 19/02/1953 | |
| BURMA | Signature | 21/10/1951 | |
| CANADA | Signature | 07/05/1951 | |
| CHILE | Signature | 24/09/1952 | |
| CZECHOSLOVAKIA | Signature | 08/06/1951 | |
| DENMARK | Signature | 21/12/1951 | |
| DENMARK | Declaration | 18/04/1952 | |
| DOMINICAN REPUBLIC | Signature | 20/06/1951 | |
| Faroe Islands | Extension | 18/04/1952 | |
| FINLAND | Signature | 05/07/1951 | |
| FRANCE | Signature | 20/06/1951 | |
| GERMANY | Signature | 01/09/1951 | |
| GREECE | Signature | 20/06/1951 | |
| HAITI | Signature | 09/10/1951 | |
| INDIA | Signature | 19/10/1951 | |
| INDONESIA | Signature | 19/10/1951 | |
| ITALY | Signature | 18/10/1951 | |
| LIBERIA | Signature | 19/06/1951 | |
| LUXEMBOURG | Signature | 20/06/1951 | |
| NETHERLANDS THE | Signature | 20/06/1951 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | 01/01/1986 |
| NEW ZEALAND | Signature | 12/10/1951 | |
| NICARAGUA | Signature | 30/06/1953 | |
| NORWAY | Signature | 03/07/1951 | |
| PAKISTAN | Signature | 19/10/1951 | |
| Papua New Guinea | Extension | 04/08/1975 | 03/09/1975 |
| PERU | Signature | 07/09/1951 | |
| SOUTH AFRICA | Signature | 19/10/1951 | |
| Southern Rhodesia | Signature | 20/06/1951 | |
| SWEDEN | Signature | 07/06/1951 | |
| TURKEY | Signature | 17/09/1951 | |
| UNITED KINGDOM | Signature | 19/12/1951 | |
| UNITED STATES OF AMERICA | Signature | 20/06/1951 | |
| URUGUAY | Signature | 16/11/1953 | |