| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Accession | 08/04/1940 | |
| ALBANIA | Signature | 31/01/1939 | |
| AUSTRALIA | Signature | 31/10/1938 | |
| AUSTRALIA | Ratification | 28/04/1939 | |
| BELGIUM | Accession | 05/06/1939 | |
| BRAZIL | Signature | 26/01/1939 | |
| BRAZIL | Ratification | 19/07/1945 | |
| CZECHOSLOVAKIA | Signature | 28/01/1939 | |
| DENMARK | Signature | 25/01/1939 | |
| DENMARK | Ratification | 15/11/1939 | |
| DOMINICAN REPUBLIC | Signature | 31/10/1938 | |
| EGYPT | Signature | 31/10/1938 | |
| EGYPT | Ratification | 24/07/1939 | |
| EGYPT | Declaration | 24/07/1939 | |
| FRANCE | Signature | 31/10/1938 | |
| FRANCE | Ratification | 02/02/1939 | |
| GERMANY | Signature | 31/10/1938 | |
| GREECE | Signature | 31/10/1938 | |
| GREECE | Ratification | 10/01/1940 | |
| HAYTI | Signature | 31/01/1939 | |
| HUNGARY | Signature | 30/01/1939 | |
| INDIA | Signature | 31/10/1938 | |
| INDIA | Ratification | 13/08/1947 | |
| IRELAND, REPUBLIC OF | Signature | 28/01/1939 | |
| ITALY | Signature | 31/10/1938 | |
| ITALY | Ratification | 09/06/1939 | |
| JAPAN | Signature | 31/10/1938 | |
| LUXEMBOURG | Signature | 26/11/1938 | |
| MEXICO | Signature | 31/01/1939 | |
| MONACO | Signature | 24/01/1939 | |
| NETHERLANDS THE | Signature | 31/10/1938 | |
| New Guinea | Extension | 28/09/1939 | |
| NEW ZEALAND | Accession | 30/09/1939 | |
| Papua | Extension | 28/04/1939 | |
| POLAND | Signature | 03/11/1938 | |
| PORTUGAL | Signature | 23/11/1938 | |
| PORTUGAL | Ratification | 12/06/1942 | |
| ROUMANIA | Signature | 31/10/1938 | |
| SOUTH AFRICA | Accession | 31/07/1939 | |
| SWEDEN | Signature | 30/01/1939 | |
| SWEDEN | Ratification | 14/11/1939 | |
| SWITZERLAND | Signature | 31/10/1938 | |
| TURKEY | Accession | 01/06/1942 | |
| UNITED KINGDOM | Signature | 31/10/1938 | |
| UNITED KINGDOM | Ratification | 26/05/1939 | |
| UNITED STATES OF AMERICA | Signature | 31/10/1938 | |
| VENEZUELA | Signature | 31/01/1939 | |
| YUGOSLAVIA | Signature | 31/01/1939 | |