| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AFGHANISTAN | Accession | 06/05/1941 | |
| ALBANIA | Accession | 11/10/1940 | |
| Algeria | Extension | 26/06/1941 | |
| ARGENTINE REPUBLIC | Signature | 23/05/1939 | |
| ARGENTINE REPUBLIC | Ratification | 28/07/1948 | |
| AUSTRIA | Adherence | 28/08/1946 | |
| BELGIUM | Signature | 23/05/1939 | |
| BOLIVIA | Signature | 23/05/1939 | |
| BRAZIL | Signature | 23/05/1939 | |
| BULGARIA | Signature | 23/05/1939 | |
| CHILE | Signature | 23/05/1939 | |
| CHINA | Signature | 23/05/1939 | |
| COLOMBIA | Signature | 23/05/1939 | |
| CONGO | Signature | 23/05/1939 | |
| COSTA RICA | Signature | 23/05/1939 | |
| CROATIA | Accession | 26/05/1941 | |
| CUBA | Signature | 23/05/1939 | |
| Curacao | Extension | 05/04/1940 | |
| CZECHOSLOVAKIA | Accession | 10/08/1945 | |
| DANZIG | Signature | 23/05/1939 | |
| DENMARK | Signature | 23/05/1939 | |
| DOMINICAN REPUBLIC | Signature | 23/05/1939 | |
| East Indies | Extension | 05/04/1940 | |
| ECUADOR | Signature | 23/05/1939 | |
| EGYPT | Signature | 23/05/1939 | |
| EGYPT | Ratification | 16/08/1940 | |
| ESTONIA | Signature | 23/05/1939 | |
| ETHIOPIA | Accession | 28/10/1946 | |
| FINLAND | Signature | 23/05/1939 | |
| FRANCE | Signature | 23/05/1939 | |
| FRANCE | Ratification | 26/06/1941 | |
| French Indo-china | Extension | 04/12/1939 | |
| GREECE | Signature | 23/05/1939 | |
| GUATEMALA | Signature | 23/05/1939 | |
| HAYTI | Signature | 23/05/1939 | |
| HONDURAS | Signature | 23/05/1939 | |
| HUNGARY | Accession | 24/05/1940 | |
| ICELAND | Signature | 23/05/1939 | |
| INDIA | Signature | 23/05/1939 | |
| INDIA | Ratification | 09/02/1942 | |
| IRAN | Signature | 23/05/1939 | |
| IRAQ | Signature | 23/05/1939 | |
| ITALY | Accession | 30/12/1939 | |
| JAPAN | Signature | 23/05/1939 | |
| JAPAN | Ratification | 12/09/1940 | |
| LATVIA | Signature | 23/05/1939 | |
| Lebanon | Extension | 23/05/1939 | |
| LEBANON | Adherence | 27/11/1945 | |
| LIBERIA | Signature | 23/05/1939 | |
| LITHUANIA | Signature | 23/05/1939 | |
| LUXEMBOURG | Signature | 23/05/1939 | |
| MEXICO | Signature | 23/05/1939 | |
| MEXICO | Ratification | 02/10/1940 | |
| MOROCCO | Signature | 23/05/1939 | |
| MOROCCO | Ratification | 26/06/1941 | |
| NETHERLANDS THE | Signature | 23/05/1939 | |
| NETHERLANDS THE | Ratification | 05/04/1940 | |
| NICARAGUA | Signature | 23/05/1939 | |
| NORWAY | Signature | 23/05/1939 | |
| PAKISTAN | Accession | 29/08/1947 | |
| PANAMA | Signature | 23/05/1939 | |
| PARAGUAY | Signature | 23/05/1939 | |
| PERU | Signature | 23/05/1939 | |
| PERU | Ratification | 14/04/1950 | |
| POLAND | Signature | 23/05/1939 | |
| PORTUGAL | Signature | 23/05/1939 | |
| Portugal, Provinces In West Africa | Extension | 23/05/1939 | |
| Provs in E.Africa, Asia and Oceania | Extension | 23/05/1939 | |
| ROUMANIA | Signature | 23/05/1939 | |
| SALVADOR | Signature | 23/05/1939 | |
| SALVADOR | Ratification | 16/12/1942 | |
| Surinam | Extension | 05/04/1940 | |
| SWEDEN | Signature | 23/05/1939 | |
| SWEDEN | Ratification | 16/09/1940 | |
| SWITZERLAND | Signature | 23/05/1939 | |
| SWITZERLAND | Ratification | 08/11/1940 | |
| Syria | Extension | 23/05/1939 | |
| SYRIA | Adherence | 10/04/1946 | |
| THAILAND | Signature | 23/05/1939 | |
| TRANSJORDAN | Accession | 10/04/1947 | |
| Tunisia | Extension | 26/06/1941 | |
| TURKEY | Signature | 23/05/1939 | |
| URUGUAY | Signature | 23/05/1939 | |
| VATICAN CITY | Signature | 23/05/1939 | |
| VENEZUELA | Signature | 23/05/1939 | |
| West Indies | Extension | 05/04/1940 | |
| YEMEN | Accession | 17/02/1940 | |
| YUGOSLAVIA | Signature | 23/05/1939 |