| Country | Action | Action Date | Effective Date |
|---|
| ARGENTINE REPUBLIC | Signature | 24/06/1938 | |
| ARGENTINE REPUBLIC | Ratification | 18/06/1946 | |
| AUSTRALIA | Withdrawal | 01/01/1905 | 01/07/1950 |
| AUSTRALIA | Signature | 24/06/1938 | |
| AUSTRALIA | Ratification | 23/07/1946 | |
| CANADA | Withdrawal | 01/01/1905 | 01/07/1949 |
| CANADA | Signature | 24/06/1938 | |
| CANADA | Ratification | 21/07/1941 | |
| CHILE | Accession | 13/02/1946 | |
| DENMARK | Accession | 10/07/1939 | |
| FRANCE | Succession | 16/04/1946 | |
| GERMANY | Signature | 24/06/1938 | |
| GERMANY | Ratification | 31/10/1938 | |
| ICELAND | Withdrawal | 01/01/1905 | 01/07/1949 |
| ICELAND | Accession | 12/03/1947 | |
| IRELAND, REPUBLIC OF | Signature | 24/06/1938 | |
| IRELAND, REPUBLIC OF | Ratification | 20/06/1940 | |
| NETHERLANDS THE | Accession | 07/12/1945 | |
| NEW ZEALAND | Withdrawal | 01/01/1905 | 01/07/1950 |
| NEW ZEALAND | Signature | 24/06/1938 | |
| NEW ZEALAND | Ratification | 15/02/1946 | |
| NORWAY | Withdrawal | 01/01/1905 | 01/07/1949 |
| NORWAY | Signature | 24/06/1938 | |
| NORWAY | Ratification | 30/12/1938 | |
| PANAMA | Withdrawal | 01/01/1905 | 01/07/1949 |
| PANAMA | Accession | 14/06/1948 | |
| SOUTH AFRICA | Withdrawal | 01/01/1905 | 01/07/1950 |
| SOUTH AFRICA | Signature | 24/06/1938 | |
| SOUTH AFRICA | Ratification | 18/03/1946 | |
| SOVIET UNION | Accession | 25/11/1946 | |
| UNITED KINGDOM | Signature | 24/06/1938 | |
| UNITED KINGDOM | Ratification | 07/12/1938 | |
| UNITED KINGDOM | Withdrawal | 01/07/1949 | 01/07/1949 |
| UNITED STATES OF AMERICA | Withdrawal | 01/01/1905 | 01/07/1949 |
| UNITED STATES OF AMERICA | Signature | 24/06/1938 | |
| UNITED STATES OF AMERICA | Ratification | 30/03/1939 | |