| Country | Action | Action Date | Effective Date |
|---|
| Antilles | Extension | | 01/01/1986 |
| Aruba | Extension | | 01/01/1986 |
| AUSTRALIA | Declaration | 04/08/1975 | |
| AUSTRIA | Signature | 24/10/1953 | |
| BELGIUM | Signature | 24/10/1953 | |
| CEYLON | Signature | 31/12/1953 | |
| CHILE | Signature | 02/02/1959 | |
| DENMARK | Signature | 27/01/1954 | |
| FINLAND | Signature | 24/10/1953 | |
| FRANCE | Signature | 24/10/1953 | |
| GERMANY FEDERAL REPUBLIC | Signature | 24/10/1953 | |
| GREECE | Signature | 24/10/1953 | |
| INDIA | Signature | 24/10/1953 | |
| ITALY | Signature | 24/10/1953 | |
| LUXEMBOURG | Signature | 30/10/1953 | |
| NETHERLANDS THE | Signature | 30/10/1953 | |
| NEW ZEALAND | Signature | 24/10/1953 | |
| NICARAGUA | Signature | 12/11/1956 | |
| NORWAY | Signature | 24/10/1953 | |
| Papua New Guinea | Extension | 04/08/1975 | 03/09/1975 |
| PERU | Signature | 23/08/1956 | |
| SOUTH AFRICA | Signature | 29/12/1953 | |
| Southern Rhodesia | Signature | 24/10/1953 | |
| TURKEY | Signature | 24/10/1953 | |
| UNITED KINGDOM | Signature | 24/10/1953 | |
| UNITED STATES OF AMERICA | Signature | 24/10/1953 | |
| URUGUAY | Signature | 16/11/1953 | |