| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Accession | 13/04/1932 | |
| AUSTRALIA | Declaration | 13/04/1932 | |
| AUSTRIA | Signature | 14/12/1928 | |
| AUSTRIA | Ratification | 27/03/1931 | |
| BELGIUM | Signature | 14/12/1928 | |
| BELGIUM | Ratification | 05/05/1950 | |
| BELGIUM | Declaration | 05/05/1950 | |
| BELGIUM | Declaration | 02/05/1952 | |
| BRAZIL | Signature | 14/12/1928 | |
| BRAZIL | Reservation | 14/12/1928 | |
| BULGARIA | Signature | 14/12/1928 | |
| BULGARIA | Ratification | 29/11/1929 | |
| CANADA | Accession | 23/08/1930 | |
| CHILE | Accession | 20/11/1934 | |
| CUBA | Accession | 17/08/1932 | |
| CZECH REPUBLIC | Succession | 30/12/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 14/12/1928 | |
| CZECHOSLOVAKIA | Ratification | 19/02/1931 | |
| DANZIG | Signature | 14/12/1928 | |
| DANZIG | Reservation | 14/12/1928 | |
| DENMARK | Declaration | 14/12/1928 | |
| DENMARK | Signature | 14/12/1928 | |
| DENMARK | Ratification | 09/09/1929 | |
| East Indies | Extension | 05/05/1933 | |
| EGYPT | Signature | 14/12/1928 | |
| EGYPT | Ratification | 27/06/1930 | |
| ESTONIA | Signature | 14/12/1928 | |
| FINLAND | Signature | 14/12/1928 | |
| FINLAND | Ratification | 23/09/1938 | |
| FRANCE | Signature | 14/12/1928 | |
| FRANCE | Declaration | 14/12/1928 | |
| FRANCE | Ratification | 01/02/1933 | |
| GERMANY | Signature | 14/12/1928 | |
| GHANA | Succession | 07/04/1958 | |
| GREECE | Signature | 14/12/1928 | |
| GREECE | Ratification | 18/09/1930 | |
| GREECE | Reservation | 18/09/1930 | |
| HUNGARY | Signature | 14/12/1928 | |
| INDIA | Accession | 15/05/1931 | |
| IRELAND, REPUBLIC OF | Signature | 14/12/1928 | |
| IRELAND, REPUBLIC OF | Ratification | 15/09/1930 | |
| ISRAEL | Accession | 28/12/1950 | |
| ITALY | Signature | 14/12/1928 | |
| ITALY | Declaration | 14/12/1928 | |
| ITALY | Ratification | 11/06/1931 | |
| JAPAN | Signature | 14/12/1928 | |
| JAPAN | Declaration | 14/12/1928 | |
| JAPAN | Ratification | 03/09/1952 | |
| LATVIA | Signature | 14/12/1928 | |
| LATVIA | Ratification | 05/07/1937 | |
| LIBERIA | Accession | 16/09/2005 | 15/12/2005 |
| LITHUANIA | Accession | 02/04/1938 | |
| LUXEMBOURG | Signature | 14/12/1928 | |
| LUXEMBOURG | Ratification | 23/07/1953 | |
| NETHERLANDS THE | Signature | 14/12/1928 | |
| NETHERLANDS THE | Declaration | 14/12/1928 | |
| NETHERLANDS THE | Ratification | 13/09/1932 | |
| NETHERLANDS THE | Declaration | 05/05/1933 | |
| NIGERIA | Succession | 23/07/1965 | |
| NORWAY | Signature | 14/12/1928 | |
| NORWAY | Ratification | 20/03/1929 | |
| NORWAY | Declaration | 20/03/1929 | |
| POLAND | Signature | 14/12/1928 | |
| POLAND | Ratification | 23/07/1931 | |
| PORTUGAL | Signature | 14/12/1928 | |
| PORTUGAL | Declaration | 14/12/1928 | |
| PORTUGAL | Ratification | 23/10/1931 | |
| PORTUGAL | Reservation | 23/10/1931 | |
| ROUMANIA | Signature | 14/12/1928 | |
| ROUMANIA | Ratification | 22/06/1931 | |
| SOUTH AFRICA | Signature | 14/12/1928 | |
| SOUTH AFRICA | Ratification | 01/05/1930 | |
| SOUTH AFRICA | Reservation | 01/05/1930 | |
| Southern Rhodesia | Accession | 14/10/1931 | |
| Southern Rhodesia | Reservation | 14/10/1931 | |
| SWEDEN | Signature | 14/12/1928 | |
| SWEDEN | Ratification | 17/02/1930 | |
| SWITZERLAND | Signature | 14/12/1928 | |
| SWITZERLAND | Ratification | 10/07/1930 | |
| UNITED KINGDOM | Declaration | 14/12/1928 | |
| UNITED KINGDOM | Signature | 14/12/1928 | |
| UNITED KINGDOM | Ratification | 09/05/1930 | |
| YUGOSLAVIA | Signature | 14/12/1928 | |
| ZIMBABWE | Succession | 01/12/1998 | 18/04/1980 |