| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ALBANIA | Accession | 29/01/1940 | |
| AUSTRALIA | Signature | 22/12/1934 | |
| AUSTRALIA | Declaration | 21/01/1936 | |
| BELGIUM | Accession | 14/08/1935 | |
| Bermuda | Extension | 31/08/1938 | |
| British Honduras | Extension | 31/08/1938 | |
| CANADA | Accession | 08/04/1936 | |
| Ceylon | Extension | 31/08/1938 | |
| Cyprus | Extension | 31/08/1938 | |
| DENMARK | Signature | 22/12/1934 | |
| DENMARK | Ratification | 29/03/1935 | |
| East Indies | Extension | 22/12/1934 | |
| ESTONIA | Signature | 22/12/1934 | |
| ESTONIA | Ratification | 27/08/1935 | |
| Falkland Islands | Extension | 31/08/1938 | |
| Fiji | Extension | 31/08/1938 | |
| FRANCE | Signature | 22/12/1934 | |
| GERMANY | Accession | 31/10/1935 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/01/1953 | |
| Gibraltar | Extension | 31/08/1938 | |
| Gold Coast | Extension | 31/08/1938 | |
| GREECE | Signature | 22/12/1934 | |
| Hong Kong | Extension | 31/08/1938 | |
| HUNGARY | Accession | 06/12/1939 | |
| India | Extension | 31/08/1938 | |
| IRAQ | Accession | 29/09/1936 | |
| ITALY | Accession | 29/09/1936 | |
| Kenya | Extension | 31/08/1938 | |
| LATVIA | Signature | 22/12/1934 | |
| LATVIA | Declaration | 22/12/1934 | |
| LITHUANIA | Signature | 22/12/1934 | |
| LITHUANIA | Declaration | 22/12/1934 | |
| Malay States, Federated | Extension | 31/08/1938 | |
| Malay States, Unfederated | Extension | 31/08/1938 | |
| Malta | Extension | 31/08/1938 | |
| Mauritius | Extension | 31/08/1938 | |
| MONACO | Accession | 08/09/1936 | |
| Nauru | Extension | 21/01/1936 | |
| NETHERLANDS THE | Signature | 22/12/1934 | |
| NETHERLANDS THE | Declaration | 22/12/1934 | |
| New Guinea | Extension | 21/01/1936 | |
| NEW ZEALAND | Signature | 22/12/1934 | |
| Newfoundland (UK) | Extension | 20/06/1935 | |
| Nigeria | Extension | 31/08/1938 | |
| North Borneo | Extension | 31/08/1938 | |
| NORWAY | Signature | 22/12/1934 | |
| Palestine | Extension | 31/08/1938 | |
| Papua | Extension | 21/01/1936 | |
| ROUMANIA | Accession | 14/06/1938 | |
| Sarawak | Extension | 31/08/1938 | |
| Seychelles | Extension | 31/08/1938 | |
| Sierra Leone | Extension | 31/08/1938 | |
| Somaliland Protectorate | Extension | 31/08/1938 | |
| SOUTH AFRICA | Extension | 22/12/1934 | |
| SOUTH AFRICA | Declaration | 03/06/1937 | |
| South West Africa | Extension | 03/06/1937 | |
| SOVIET UNION | Signature | 22/12/1934 | |
| Straits Settlements | Extension | 31/08/1938 | |
| Surinam | Extension | 22/12/1934 | |
| SWEDEN | Signature | 22/12/1934 | |
| Tanganyika | Extension | 31/08/1938 | |
| The Gambia | Extension | 31/08/1938 | |
| TURKEY | Accession | 30/11/1938 | |
| UNITED KINGDOM | Signature | 22/12/1934 | |
| UNITED KINGDOM | Declaration | 31/08/1938 | |
| Windward Islands | Extension | 31/08/1938 | |
| YUGOSLAVIA | Signature | 22/12/1934 | |
| Zanzibar | Extension | 31/08/1938 |