| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| CANADA | Signature | 16/12/1946 | |
| DOMINICAN REPUBLIC | Signature | 17/12/1946 | |
| FRANCE | Signature | 17/12/1946 | |
| GUATEMALA | Signature | 16/12/1946 | |
| HONDURAS | Signature | 18/12/1946 | |
| LIBERIA | Signature | 31/12/1946 | |
| NETHERLANDS THE | Signature | 28/01/1947 | |
| NEW ZEALAND | Signature | 17/03/1947 | |
| NORWAY | Signature | 04/02/1947 | |
| PHILIPPINES | Signature | 18/12/1946 | |
| UNITED KINGDOM | Signature | 05/02/1947 | |
| UNITED STATES OF AMERICA | Signature | 16/12/1946 | |
| VENEZUELA | Ratification | 13/09/1948 |