| Country | Action | Action Date | Effective Date |
|---|
| ALGERIA | Accession | 12/05/1910 | |
| ARGENTINA | Withdrawal | | 15/11/1950 |
| ARGENTINA | Accession | 12/09/1910 | |
| Australia | Withdrawal | | 15/11/1950 |
| Australia | Accession | 01/01/1905 | |
| Belgian Congo | Accession | 21/03/1927 | |
| BELGIUM | Withdrawal | | 15/11/1950 |
| BELGIUM | Signature | 09/12/1907 | |
| BELGIUM | Ratification | 08/08/1908 | |
| BOLIVIA | Withdrawal | | 15/11/1950 |
| BOLIVIA | Accession | 10/04/1912 | |
| BRAZIL | Withdrawal | | 15/11/1950 |
| BRAZIL | Signature | 09/12/1907 | |
| BRAZIL | Ratification | 28/10/1908 | |
| BULGARIA | Withdrawal | | 15/11/1950 |
| BULGARIA | Accession | 29/11/1909 | |
| Canada | Withdrawal | | 15/11/1950 |
| Canada | Accession | 11/04/1901 | |
| Ceylon | Withdrawal | | 15/11/1950 |
| Ceylon | Accession | 26/09/1929 | |
| CHILE | Withdrawal | | 15/11/1950 |
| CHILE | Accession | 18/11/1912 | |
| CZECHOSLOVAKIA | Withdrawal | | 15/11/1950 |
| CZECHOSLOVAKIA | Accession | 01/09/1922 | |
| DENMARK | Withdrawal | | 15/11/1950 |
| DENMARK | Accession | 02/04/1913 | |
| EGYPT | Withdrawal | | 15/11/1950 |
| EGYPT | Signature | 09/12/1907 | |
| EGYPT | Ratification | 20/11/1908 | |
| FRANCE | Signature | 09/12/1907 | |
| FRANCE | Ratification | 28/07/1908 | |
| FRANCE | Withdrawal | 14/11/1949 | |
| French Equatorial Africa | Accession | 01/01/1929 | |
| French Indo-china | Accession | 26/07/1914 | |
| French West Africa | Accession | 14/04/1920 | |
| GERMANY | Accession | 11/08/1928 | |
| GERMANY | Withdrawal | 01/09/1950 | |
| Gold Coast | Accession | 26/09/1929 | |
| GREECE | Withdrawal | | 15/11/1950 |
| GREECE | Accession | 07/02/1918 | |
| HEJAZ | Accession | 21/01/1932 | |
| Hong Kong | Accession | 26/09/1929 | |
| HUNGARY | Withdrawal | | 15/11/1950 |
| HUNGARY | Accession | 17/11/1939 | |
| India | Withdrawal | | 15/11/1950 |
| India | Accession | 01/01/1905 | |
| Indies | Letter | 03/04/1925 | |
| IRAQ | Withdrawal | | 15/11/1950 |
| IRAQ | Accession | 20/05/1934 | |
| Irish Free State | Withdrawal | | 15/11/1950 |
| Irish Free State | Accession | 23/01/1928 | |
| Italian Colonies | Accession | 01/04/1934 | |
| ITALY | Withdrawal | | 15/11/1950 |
| ITALY | Signature | 09/12/1907 | |
| ITALY | Ratification | 20/10/1908 | |
| JAPAN | Accession | 07/03/1924 | |
| JAPAN | Withdrawal | 01/08/1951 | |
| Kenya | Accession | 26/09/1929 | |
| LUXEMBOURG | Withdrawal | | 15/11/1950 |
| LUXEMBOURG | Accession | 19/07/1926 | |
| Madagascar | Accession | 14/04/1920 | |
| Malay States, Federated | Accession | 26/09/1929 | |
| MEXICO | Withdrawal | | 15/11/1950 |
| MEXICO | Accession | 19/04/1909 | |
| MONACO | Accession | 27/01/1913 | |
| MONACO | Withdrawal | 15/11/1949 | |
| Morocco | Accession | 14/04/1920 | |
| Morocco | Accession | 04/02/1921 | |
| NETHERLANDS THE | Withdrawal | | 15/11/1950 |
| NETHERLANDS THE | Signature | 09/12/1907 | |
| NETHERLANDS THE | Ratification | 25/04/1912 | |
| New Zealand | Withdrawal | | 15/11/1950 |
| New Zealand | Accession | 10/05/1924 | |
| Nigeria | Accession | 26/09/1929 | |
| NORWAY | Withdrawal | | 15/11/1950 |
| NORWAY | Accession | 29/10/1912 | |
| Palestine | Accession | 26/09/1929 | |
| PERSIA | Withdrawal | | 15/11/1950 |
| PERSIA | Accession | 25/10/1909 | |
| PERU | Withdrawal | | 15/11/1950 |
| PERU | Accession | 02/12/1908 | |
| POLAND | Accession | 29/04/1920 | |
| POLAND | Withdrawal | 10/12/1949 | |
| PORTUGAL | Withdrawal | | 15/11/1950 |
| PORTUGAL | Signature | 09/12/1907 | |
| PORTUGAL | Ratification | 30/10/1911 | |
| ROUMANIA | Accession | 05/01/1921 | |
| ROUMANIA | Withdrawal | 08/05/1950 | 15/11/1957 |
| RUSSIA | Withdrawal | | 15/11/1950 |
| RUSSIA | Signature | 09/12/1907 | |
| RUSSIA | Ratification | 28/07/1908 | |
| SAUDI ARABIA | Withdrawal | | 15/11/1950 |
| SERBIA | Accession | 03/04/1908 | |
| Sierra Leone | Accession | 26/09/1929 | |
| South Africa | Withdrawal | | 15/11/1950 |
| South Africa | Accession | 28/12/1919 | |
| SOVIET UNION | Withdrawal | | 15/11/1950 |
| SOVIET UNION | Accession | 08/01/1926 | |
| SPAIN | Signature | 09/12/1907 | |
| SPAIN | Ratification | 07/08/1908 | |
| SPAIN | Withdrawal | 16/11/1951 | |
| Straits Settlements | Accession | 26/09/1929 | |
| SUDAN | Accession | 06/12/1926 | |
| SWEDEN | Withdrawal | | 15/11/1950 |
| SWEDEN | Accession | 23/08/1909 | |
| SWITZERLAND | Withdrawal | | 15/11/1950 |
| SWITZERLAND | Signature | 09/12/1907 | |
| SWITZERLAND | Ratification | 24/10/1908 | |
| SYRIA & GRAND LEBANON | Withdrawal | | 15/11/1950 |
| SYRIA & GRAND LEBANON | Accession | 04/01/1937 | |
| Tanganyika | Accession | 26/09/1929 | |
| Trinidad | Accession | 26/09/1929 | |
| TUNIS | Accession | 03/11/1908 | |
| TURKEY | Withdrawal | | 15/11/1950 |
| TURKEY | Accession | 05/03/1911 | |
| Uganda | Accession | 26/09/1929 | |
| UNITED KINGDOM | Signature | 09/12/1907 | |
| UNITED KINGDOM | Ratification | 28/07/1908 | |
| UNITED KINGDOM | Withdrawal | 15/11/1950 | 15/11/1950 |
| UNITED STATES OF AMERICA | Withdrawal | | 15/11/1950 |
| UNITED STATES OF AMERICA | Signature | 09/12/1907 | |
| UNITED STATES OF AMERICA | Ratification | 01/08/1908 | |
| URUGUAY | Accession | 06/09/1913 | |
| URUGUAY | Withdrawal | 21/07/1953 | |
| YUGOSLAVIA | Withdrawal | | 15/11/1950 |
| Zanzibar | Accession | 26/09/1929 | |