| Country | Action | Action Date | Effective Date |
|---|
| Antilles | Extension | 01/01/1986 | 01/01/1986 |
| Aruba | Accession | 01/01/1986 | 01/01/1986 |
| BELGIUM | Signature | 24/03/1948 | |
| BRAZIL | Signature | 24/03/1948 | |
| BURMA | Signature | 24/03/1948 | |
| CANADA | Accession | 24/03/1948 | |
| CEYLON | Signature | 24/03/1948 | |
| CHILE | Signature | 24/03/1948 | |
| CUBA | Signature | 24/03/1948 | |
| FRANCE | Signature | 24/03/1948 | |
| INDIA | Signature | 24/03/1948 | |
| LEBANON | Signature | 24/03/1948 | |
| LIBERIA | Accession | 17/05/1950 | |
| LUXEMBOURG | Signature | 24/03/1948 | |
| NETHERLANDS THE | Signature | 24/03/1948 | |
| NETHERLANDS THE | Extension | 01/01/1986 | 01/01/1986 |
| NEW ZEALAND | Signature | 24/03/1948 | |
| NORWAY | Signature | 24/03/1948 | |
| PAKISTAN | Signature | 24/03/1948 | |
| PAKISTAN | Signature | 24/04/1948 | |
| SYRIA | Signature | 24/03/1948 | |
| UNITED KINGDOM | Signature | 24/03/1948 | |
| UNITED STATES OF AMERICA | Signature | 24/03/1948 | |