| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ALBANIA | Signature | 28/06/1929 | |
| Algeria | Extension | 04/01/1933 | |
| ARGENTINA | Accession | 24/09/1930 | |
| AUSTRIA | Signature | 28/06/1929 | |
| AUSTRIA | Ratification | 13/06/1930 | |
| Barbados | Extension | 20/07/1931 | |
| Belgian Congo | Extension | 13/05/1930 | |
| BELGIUM | Signature | 28/06/1929 | |
| BELGIUM | Ratification | 13/05/1930 | |
| Bermuda | Extension | 20/07/1931 | |
| BOLIVIA | Signature | 28/06/1928 | |
| BRAZIL | Signature | 28/06/1929 | |
| BRAZIL | Ratification | 21/07/1931 | |
| British Guiana | Extension | 20/07/1931 | |
| British Honduras | Extension | 20/07/1931 | |
| Brunei | Extension | 20/07/1931 | |
| BULGARIA | Signature | 28/06/1929 | |
| BULGARIA | Ratification | 02/02/1932 | |
| Cameroon & Togo Trust Territories | Extension | 04/01/1933 | |
| Ceylon | Extension | 20/07/1931 | |
| CHILE | Signature | 28/06/1929 | |
| CHILE | Ratification | 11/01/1934 | |
| CHINA | Signature | 28/06/1929 | |
| CHINA | Ratification | 03/10/1930 | |
| COLOMBIA | Signature | 28/06/1929 | |
| COLOMBIA | Ratification | 19/03/1931 | |
| CUBA | Signature | 28/06/1929 | |
| Cyprus | Extension | 20/07/1931 | |
| CZECHOSLOVAKIA | Signature | 26/06/1929 | |
| CZECHOSLOVAKIA | Ratification | 25/06/1931 | |
| DANZIG | Signature | 28/06/1929 | |
| DANZIG | Ratification | 27/11/1931 | |
| DENMARK | Signature | 28/06/1929 | |
| DENMARK | Ratification | 06/03/1930 | |
| DOMINICAN REPUBLIC | Signature | 28/06/1929 | |
| EGYPT | Signature | 28/06/1929 | |
| EGYPT | Ratification | 27/01/1931 | |
| ESTONIA | Signature | 28/06/1929 | |
| ESTONIA | Ratification | 23/07/1930 | |
| ETHIOPIA | Signature | 28/06/1929 | |
| ETHIOPIA | Ratification | 26/05/1931 | |
| Falkland Islands | Extension | 20/07/1931 | |
| Fiji | Extension | 20/07/1931 | |
| FINLAND | Signature | 28/06/1929 | |
| FINLAND | Ratification | 23/06/1930 | |
| FRANCE | Signature | 28/06/1929 | |
| FRANCE | Ratification | 09/09/1932 | |
| FRANCE | Declaration | 04/01/1933 | |
| French Colonies | Extension | 04/01/1933 | |
| French Indo-china | Extension | 04/01/1933 | |
| GERMANY | Signature | 28/06/1929 | |
| GERMANY | Ratification | 21/10/1930 | |
| Gibraltar | Extension | 12/08/1933 | |
| Gold Coast | Extension | 20/07/1931 | |
| GREECE | Signature | 28/06/1929 | |
| GREECE | Ratification | 23/03/1932 | |
| HAYTI | Signature | 28/06/1929 | |
| HEJAZ | Signature | 28/06/1929 | |
| HEJAZ | Ratification | 07/07/1930 | |
| HONDURAS | Signature | 28/06/1929 | |
| Hong Kong | Extension | 20/07/1931 | |
| HUNGARY | Signature | 28/06/1929 | |
| ICELAND | Signature | 28/06/1929 | |
| ICELAND | Ratification | 05/03/1930 | |
| India | Extension | 17/07/1930 | |
| IRAQ | Accession | 20/01/1931 | |
| Irish Free State | Extension | 02/08/1933 | |
| ITALY | Signature | 28/06/1929 | |
| ITALY | Ratification | 10/09/1930 | |
| Jamaica | Extension | 20/07/1931 | |
| JAPAN | Signature | 28/06/1929 | |
| JAPAN | Ratification | 14/11/1930 | |
| Johore | Extension | 20/07/1931 | |
| Kelantan | Extension | 20/07/1931 | |
| Kenya | Extension | 20/07/1931 | |
| LATVIA | Signature | 28/06/1929 | |
| LATVIA | Ratification | 11/08/1931 | |
| Leeward Islands | Extension | 20/07/1931 | |
| LIBERIA | Signature | 28/06/1929 | |
| LITHUANIA | Signature | 28/06/1929 | |
| LUXEMBOURG | Signature | 28/06/1929 | |
| LUXEMBOURG | Ratification | 06/08/1930 | |
| Malay States, Federated | Extension | 15/10/1931 | |
| Malay States, Unfederated | Extension | 15/10/1931 | |
| Malta | Extension | 20/07/1931 | |
| Mauritius | Extension | 20/07/1931 | |
| MOROCCO | Signature | 04/07/1930 | |
| MOROCCO | Ratification | 04/07/1930 | |
| Morocco | Extension | 14/12/1931 | |
| NETHERLANDS THE | Signature | 28/06/1929 | |
| NETHERLANDS THE | Ratification | 03/01/1930 | |
| New Zealand | Extension | 09/08/1930 | |
| Newfoundland (UK) | Extension | 20/07/1931 | |
| NICARAGUA | Signature | 28/06/1929 | |
| Nigeria | Extension | 06/04/1932 | |
| North Borneo | Extension | 20/07/1931 | |
| Northern Rhodesia | Extension | 20/07/1931 | |
| NORWAY | Signature | 28/06/1929 | |
| NORWAY | Ratification | 05/02/1930 | |
| Palestine | Extension | 20/07/1931 | |
| PANAMA | Signature | 28/06/1929 | |
| PARAGUAY | Accession | 29/06/1930 | |
| PERSIA | Signature | 28/06/1929 | |
| PERSIA | Ratification | 11/02/1931 | |
| POLAND | Signature | 28/06/1929 | |
| POLAND | Ratification | 12/05/1932 | |
| PORTUGAL | Signature | 28/06/1929 | |
| PORTUGAL | Ratification | 17/07/1931 | |
| ROUMANIA | Signature | 28/06/1929 | |
| ROUMANIA | Ratification | 21/11/1930 | |
| SAAR TERRITORY | Signature | 28/06/1929 | |
| SAAR TERRITORY | Ratification | 17/06/1930 | |
| SAN MARINO | Signature | 28/06/1929 | |
| SAN MARINO | Ratification | 25/01/1932 | |
| Sarawak | Extension | 20/07/1931 | |
| Seychelles | Extension | 20/07/1931 | |
| SIAM | Signature | 28/06/1929 | |
| SIAM | Ratification | 25/07/1930 | |
| Sierra Leone | Extension | 20/07/1931 | |
| Somaliland Protectorate | Extension | 20/07/1931 | |
| SOVIET UNION | Signature | 28/06/1929 | |
| SOVIET UNION | Ratification | 22/07/1930 | |
| SPAIN | Signature | 28/06/1929 | |
| SPAIN | Ratification | 16/06/1930 | |
| SPAIN | Declaration | 14/12/1931 | |
| St Helena | Extension | 20/07/1931 | |
| Straits Settlements | Extension | 20/07/1931 | |
| SWEDEN | Signature | 28/06/1929 | |
| SWEDEN | Ratification | 12/03/1930 | |
| SWITZERLAND | Signature | 28/06/1929 | |
| SWITZERLAND | Ratification | 21/04/1930 | |
| SYRIA & GRAND LEBANON | Accession | 21/05/1931 | |
| Tanganyika | Extension | 16/09/1931 | |
| The Gambia | Extension | 20/07/1931 | |
| Trenganu | Extension | 20/07/1931 | |
| Trinidad And Tobago | Extension | 20/07/1931 | |
| TUNIS | Signature | 28/06/1929 | |
| TUNIS | Ratification | 02/06/1930 | |
| TURKEY | Signature | 28/06/1929 | |
| TURKEY | Ratification | 17/06/1932 | |
| Uganda | Extension | 20/07/1931 | |
| UNITED KINGDOM | Signature | 28/06/1929 | |
| UNITED KINGDOM | Ratification | 03/12/1930 | |
| UNITED KINGDOM | Declaration | 20/07/1931 | |
| UNITED KINGDOM | Declaration | 16/09/1931 | |
| UNITED KINGDOM | Declaration | 15/10/1931 | |
| UNITED KINGDOM | Declaration | 06/04/1932 | |
| UNITED KINGDOM | Declaration | 12/08/1933 | |
| VATICAN CITY | Signature | 28/06/1929 | |
| VATICAN CITY | Ratification | 26/06/1930 | |
| VENEZUELA | Signature | 28/06/1929 | |
| Windward Islands | Extension | 20/07/1931 | |
| YEMEN | Accession | 28/11/1929 | |
| YUGOSLAVIA | Signature | 28/06/1929 | |
| YUGOSLAVIA | Ratification | 31/10/1930 | |
| Zanzibar | Extension | 20/07/1931 |