| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Signature | 20/03/1948 | |
| BELGIUM | Signature | 20/03/1948 | |
| BRAZIL | Signature | 20/03/1948 | |
| BURMA | Signature | 20/03/1948 | |
| CANADA | Signature | 20/03/1948 | |
| CEYLON | Signature | 20/03/1948 | |
| CHILE | Signature | 20/03/1948 | |
| CHINA | Signature | 20/03/1948 | |
| CUBA | Signature | 20/03/1948 | |
| CZECHOSLOVAKIA | Signature | 20/03/1948 | |
| FRANCE | Signature | 20/03/1948 | |
| INDIA | Signature | 20/03/1948 | |
| LEBANON | Signature | 20/03/1948 | |
| LUXEMBOURG | Signature | 20/03/1948 | |
| NETHERLANDS THE | Signature | 20/03/1948 | |
| NEW ZEALAND | Signature | 20/03/1948 | |
| NORWAY | Signature | 20/03/1948 | |
| PAKISTAN | Signature | 20/03/1948 | |
| SOUTH AFRICA | Signature | 20/03/1948 | |
| Southern Rhodesia | Signature | 20/03/1948 | |
| SYRIA | Signature | 20/03/1948 | |
| UNITED KINGDOM | Signature | 20/03/1948 | |
| UNITED STATES OF AMERICA | Signature | 20/03/1948 | |