| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Signature | 30/04/1946 | |
| Belgian Congo | Extension | 17/06/1949 | |
| BELGIUM | Signature | 24/04/1946 | |
| BELGIUM | Ratification | 17/06/1949 | |
| CAMBODIA | Accession | 08/08/1950 | |
| CANADA | Signature | 25/04/1946 | |
| CHINA | Signature | 30/04/1946 | |
| DENMARK | Accession | 23/08/1946 | |
| DOMINICAN REPUBLIC | Accession | 29/05/1946 | |
| ECUADOR | Signature | 30/04/1946 | |
| ETHIOPIA | Accession | 04/08/1949 | |
| FINLAND | Accession | 12/08/1949 | |
| FRANCE | Signature | 30/04/1946 | |
| GREECE | Signature | 30/04/1946 | |
| HAYTI | Signature | 30/04/1946 | |
| HONDURAS | Accession | 08/07/1946 | |
| INDIA | Accession | 28/08/1947 | |
| INDIA | Reservation | 28/08/1947 | 23/02/1950 |
| ITALY | Accession | 23/07/1946 | |
| LAOS | Accession | 26/09/1950 | |
| LUXEMBOURG | Signature | 30/04/1946 | |
| NETHERLANDS THE | Accession | 05/03/1948 | |
| NEW ZEALAND | Signature | 23/04/1946 | |
| NICARAGUA | Signature | 26/04/1946 | |
| PHILIPPINES | Accession | 13/01/1948 | |
| POLAND | Accession | 28/05/1946 | |
| Ruanda Urundi | Extension | 17/06/1949 | |
| SOUTH AFRICA | Accession | 12/07/1946 | |
| SYRIA | Accession | 31/10/1946 | |
| TURKEY | Accession | 26/08/1948 | |
| UNITED KINGDOM | Signature | 29/04/1946 | |
| UNITED STATES OF AMERICA | Signature | 30/04/1946 | |
| UNITED STATES OF AMERICA | Ratification | 06/08/1946 | |
| VIETNAM | Accession | 08/08/1950 | |