| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Accession | 19/04/1948 | |
| ALBANIA | Signature | 22/07/1946 | |
| ARGENTINA | Signature | 22/07/1946 | |
| AUSTRALIA | Signature | 22/07/1946 | |
| AUSTRIA | Signature | 22/07/1946 | |
| BELGIUM | Signature | 22/07/1946 | |
| BELGIUM | Ratification | 25/06/1948 | |
| BOLIVIA | Signature | 22/07/1946 | |
| BRAZIL | Signature | 22/07/1946 | |
| BRAZIL | Ratification | 02/06/1948 | |
| BULGARIA | Signature | 22/07/1946 | |
| BURMA | Accession | 01/07/1948 | |
| BYELORUSSIA S S R | Signature | 22/07/1946 | |
| CANADA | Signature | 22/07/1946 | |
| CHILE | Signature | 22/07/1946 | |
| CHINA | Signature | 22/07/1946 | |
| COLOMBIA | Signature | 22/07/1946 | |
| COSTA RICA | Signature | 22/07/1946 | |
| CUBA | Signature | 22/07/1946 | |
| CZECHOSLOVAKIA | Signature | 22/07/1946 | |
| DENMARK | Signature | 22/07/1946 | |
| DENMARK | Ratification | 19/04/1948 | |
| DOMINICAN REPUBLIC | Signature | 22/07/1946 | |
| ECUADOR | Signature | 22/07/1946 | |
| ECUADOR | Ratification | 01/03/1949 | |
| EGYPT | Signature | 22/07/1946 | |
| EL SALVADOR | Signature | 22/07/1946 | |
| ETHIOPIA | Signature | 22/07/1946 | |
| FINLAND | Signature | 22/07/1946 | |
| FRANCE | Signature | 22/07/1946 | |
| GREECE | Signature | 22/07/1946 | |
| GUATEMALA | Signature | 22/07/1946 | |
| GUATEMALA | Ratification | 26/08/1949 | |
| HAITI | Signature | 22/07/1946 | |
| HONDURAS | Signature | 22/07/1946 | |
| HUNGARY | Accession | 17/06/1948 | |
| INDIA | Signature | 22/07/1946 | |
| IRAN | Signature | 22/07/1946 | |
| IRAQ | Signature | 22/07/1946 | |
| IRELAND, REPUBLIC OF | Signature | 22/07/1946 | |
| ITALY | Signature | 22/07/1946 | |
| LEBANON | Signature | 22/07/1946 | |
| LIBERIA | Signature | 22/07/1946 | |
| LUXEMBOURG | Signature | 22/07/1946 | |
| MEXICO | Signature | 22/07/1946 | |
| MEXICO | Ratification | 07/04/1948 | |
| NETHERLANDS THE | Signature | 22/07/1946 | |
| NEW ZEALAND | Signature | 22/07/1946 | |
| NICARAGUA | Signature | 22/07/1946 | |
| NORWAY | Signature | 22/07/1946 | |
| PAKISTAN | Accession | 23/06/1948 | |
| PANAMA | Signature | 22/07/1946 | |
| PARAGUAY | Signature | 22/07/1946 | |
| PERU | Signature | 22/07/1946 | |
| PHILIPPINES | Signature | 22/07/1946 | |
| POLAND | Signature | 22/07/1946 | |
| POLAND | Ratification | 06/05/1948 | |
| PORTUGAL | Signature | 22/07/1946 | |
| SAUDI ARABIA | Signature | 22/07/1946 | |
| SAUDI ARABIA | Ratification | 26/05/1947 | |
| SIAM | Signature | 22/07/1946 | |
| SOUTH AFRICA | Signature | 22/07/1946 | |
| SOVIET UNION | Signature | 22/07/1946 | |
| SWITZERLAND | Signature | 22/07/1946 | |
| SYRIA | Signature | 22/07/1946 | |
| TRANSJORDAN | Signature | 22/07/1946 | |
| TURKEY | Signature | 22/07/1946 | |
| UKRAINE S S R | Signature | 22/07/1946 | |
| UNITED KINGDOM | Signature | 22/07/1946 | |
| UNITED STATES OF AMERICA | Signature | 22/07/1946 | |
| URUGUAY | Signature | 22/07/1946 | |
| VENEZUELA | Signature | 22/07/1946 | |
| YUGOSLAVIA | Signature | 22/07/1946 | |