| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Algeria | Extension | 30/03/1946 | |
| ARGENTINA | Signature | 30/03/1946 | |
| AUSTRALIA | Signature | 30/03/1946 | |
| Belgian Congo | Extension | 30/03/1946 | |
| BELGIUM | Signature | 30/03/1946 | |
| BRAZIL | Signature | 30/03/1946 | |
| BRAZIL | Ratification | 16/09/1949 | |
| BULGARIA | Signature | 30/03/1946 | |
| CANADA | Signature | 30/03/1946 | |
| CHILE | Signature | 30/03/1946 | |
| CHINA | Signature | 30/03/1946 | |
| COLOMBIA | Signature | 30/03/1946 | |
| CUBA | Signature | 30/03/1946 | |
| CZECHOSLOVAKIA | Signature | 30/03/1946 | |
| CZECHOSLOVAKIA | Ratification | 28/01/1948 | |
| DENMARK | Signature | 30/03/1946 | |
| East Indies | Extension | 30/03/1946 | |
| ECUADOR | Signature | 30/03/1946 | |
| EGYPT | Signature | 30/03/1946 | |
| EGYPT | Ratification | 13/10/1947 | |
| EL SALVADOR | Signature | 30/03/1946 | |
| FINLAND | Signature | 30/03/1946 | |
| FRANCE | Signature | 30/03/1946 | |
| French Indo-china | Signature | 30/03/1946 | |
| French West Africa | Extension | 30/03/1946 | |
| GREECE | Signature | 30/03/1946 | |
| Hawaii | Extension | 30/03/1946 | |
| HAYTI | Signature | 30/03/1946 | |
| HUNGARY | Signature | 30/03/1946 | |
| INDIA | Signature | 30/03/1946 | |
| IRAN | Signature | 30/03/1946 | |
| IRELAND, REPUBLIC OF | Signature | 30/03/1946 | |
| ITALY | Signature | 30/03/1946 | |
| ITALY | Ratification | 29/01/1948 | |
| JAPAN | Accession | 31/05/1954 | |
| LUXEMBOURG | Signature | 30/03/1946 | |
| Madagascar And Dependencies | Extension | 30/03/1946 | |
| Morocco | Extension | 30/03/1946 | |
| NETHERLANDS THE | Signature | 30/03/1946 | |
| NICARAGUA | Signature | 30/03/1946 | |
| NICARAGUA | Ratification | 15/11/1947 | |
| NORWAY | Signature | 30/03/1946 | |
| PARAGUAY | Signature | 30/03/1946 | |
| PERU | Signature | 30/03/1946 | |
| Philippines | Extension | 30/03/1946 | |
| POLAND | Signature | 30/03/1946 | |
| PORTUGAL | Signature | 30/03/1946 | |
| Puerto Rico | Extension | 30/03/1946 | |
| ROUMANIA | Signature | 30/03/1946 | |
| SAN MARINO | Signature | 30/03/1946 | |
| SIAM | Signature | 30/03/1946 | |
| SOUTH AFRICA | Signature | 30/03/1946 | |
| SPAIN | Signature | 30/03/1946 | |
| SWEDEN | Signature | 30/03/1946 | |
| SWITZERLAND | Signature | 30/03/1946 | |
| Tunisia | Extension | 30/03/1946 | |
| TURKEY | Signature | 30/03/1946 | |
| TURKEY | Ratification | 25/10/1947 | |
| UNITED KINGDOM | Signature | 30/03/1946 | |
| UNITED STATES OF AMERICA | Signature | 30/03/1946 | |
| UNITED STATES OF AMERICA | Ratification | 10/02/1947 | |
| URUGUAY | Signature | 30/03/1946 | |
| Virgin Islands | Extension | 30/03/1946 | |
| YUGOSLAVIA | Signature | 30/03/1946 |