| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Accession | 28/08/1937 | |
| ALBANIA | Signature | 20/03/1934 | |
| ALBANIA | Ratification | 10/03/1937 | |
| ARGENTINE REPUBLIC | Signature | 20/03/1934 | |
| AUSTRIA | Signature | 20/03/1934 | |
| AUSTRIA | Ratification | 05/03/1935 | |
| Belgian Congo | Extension | 22/10/1935 | |
| BELGIUM | Signature | 20/03/1934 | |
| BELGIUM | Ratification | 22/10/1935 | |
| BOLIVIA | Signature | 20/03/1934 | |
| BRAZIL | Signature | 20/03/1934 | |
| BRAZIL | Ratification | 19/03/1939 | |
| BULGARIA | Signature | 20/03/1934 | |
| BULGARIA | Ratification | 10/08/1939 | |
| CHILE | Signature | 20/03/1934 | |
| CHILE | Ratification | 26/03/1935 | |
| CHINA | Signature | 20/03/1934 | |
| CHINA | Ratification | 11/01/1936 | |
| COLOMBIA | Signature | 20/03/1934 | |
| COLOMBIA | Ratification | 21/05/1936 | |
| COSTA RICA | Signature | 20/03/1934 | |
| CUBA | Signature | 20/03/1934 | |
| CZECHOSLOVAKIA | Signature | 20/03/1934 | |
| CZECHOSLOVAKIA | Ratification | 05/05/1935 | |
| DANZIG | Signature | 20/03/1934 | |
| DENMARK | Signature | 18/12/1934 | |
| DENMARK | Ratification | 18/12/1934 | |
| DOMINICAN REPUBLIC | Signature | 20/03/1934 | |
| DOMINICAN REPUBLIC | Ratification | 14/11/1936 | |
| East Indies | Extension | 23/10/1934 | |
| ECUADOR | Signature | 20/03/1934 | |
| ECUADOR | Ratification | 31/12/1935 | |
| EGYPT | Signature | 20/03/1934 | |
| EGYPT | Ratification | 30/12/1934 | |
| ESTONIA | Signature | 20/03/1934 | |
| ESTONIA | Ratification | 04/07/1936 | |
| ETHIOPIA | Signature | 20/03/1934 | |
| ETHIOPIA | Ratification | 22/09/1935 | |
| FINLAND | Signature | 20/03/1934 | |
| FINLAND | Ratification | 04/07/1935 | |
| FRANCE | Signature | 20/03/1934 | |
| FRANCE | Ratification | 09/08/1937 | |
| GERMANY | Signature | 20/03/1934 | |
| GERMANY | Ratification | 16/02/1935 | |
| GREECE | Signature | 20/03/1934 | |
| GUATEMALA | Signature | 20/03/1934 | |
| GUATEMALA | Ratification | 14/09/1938 | |
| HAYTI | Accession | 19/12/1934 | |
| HONDURAS | Signature | 20/03/1934 | |
| HONDURAS | Ratification | 29/01/1938 | |
| HUNGARY | Signature | 20/03/1934 | |
| HUNGARY | Ratification | 01/05/1935 | |
| ICELAND | Signature | 20/03/1934 | |
| ICELAND | Ratification | 27/02/1935 | |
| India | Signature | 20/03/1934 | |
| India | Ratification | 02/06/1935 | |
| IRAQ | Signature | 20/03/1934 | |
| IRAQ | Ratification | 05/04/1936 | |
| ITALY | Signature | 20/03/1934 | |
| ITALY | Ratification | 06/04/1935 | |
| JAPAN | Signature | 20/03/1934 | |
| JAPAN | Ratification | 10/02/1935 | |
| LATVIA | Signature | 20/03/1934 | |
| LATVIA | Ratification | 26/01/1939 | |
| LIBERIA | Accession | 10/06/1936 | |
| LITHUANIA | Accession | 23/02/1939 | |
| LUXEMBOURG | Accession | 18/08/1934 | |
| Morocco | Extension | 24/04/1935 | |
| Morocco | Extension | 09/08/1937 | |
| NETHERLANDS THE | Signature | 20/03/1934 | |
| NETHERLANDS THE | Ratification | 23/10/1934 | |
| NICARAGUA | Signature | 20/03/1934 | |
| NORWAY | Signature | 20/03/1934 | |
| NORWAY | Ratification | 03/12/1934 | |
| PANAMA | Signature | 20/03/1934 | |
| PARAGUAY | Signature | 20/03/1934 | |
| PERSIA | Signature | 20/03/1934 | |
| PERSIA | Ratification | 04/09/1935 | |
| PERU | Signature | 20/03/1934 | |
| PERU | Ratification | 16/11/1936 | |
| POLAND | Signature | 20/03/1934 | |
| POLAND | Ratification | 17/09/1935 | |
| PORTUGAL | Signature | 20/03/1934 | |
| PORTUGAL | Ratification | 13/01/1938 | |
| ROUMANIA | Signature | 20/03/1934 | |
| ROUMANIA | Ratification | 05/11/1935 | |
| SALVADOR | Accession | 30/12/1934 | |
| SAN MARINO | Signature | 20/03/1934 | |
| SAUDI ARABIA | Signature | 20/03/1934 | |
| SAUDI ARABIA | Ratification | 21/10/1934 | |
| SIAM | Accession | 03/01/1939 | |
| SLOVAK REPUBLIC | Accession | 28/06/1939 | |
| SPAIN | Signature | 20/03/1934 | |
| SPAIN | Ratification | 24/04/1935 | |
| Surinam | Extension | 23/10/1934 | |
| SWEDEN | Signature | 20/03/1934 | |
| SWEDEN | Ratification | 03/12/1934 | |
| SWITZERLAND | Signature | 20/03/1934 | |
| SWITZERLAND | Ratification | 20/11/1934 | |
| SYRIA & GRAND LEBANON | Signature | 20/03/1934 | |
| SYRIA & GRAND LEBANON | Ratification | 09/08/1937 | |
| TUNIS | Signature | 20/03/1934 | |
| TUNIS | Ratification | 09/08/1937 | |
| TURKEY | Signature | 20/03/1934 | |
| TURKEY | Ratification | 25/05/1937 | |
| UNITED KINGDOM | | | |
| URUGUAY | Signature | 20/03/1934 | |
| VATICAN CITY | Signature | 20/03/1934 | |
| VATICAN CITY | Ratification | 26/12/1934 | |
| VENEZUELA | Signature | 20/03/1934 | |
| VENEZUELA | Ratification | 10/05/1935 | |
| YEMEN | Accession | 20/08/1934 | |
| YUGOSLAVIA | Signature | 20/03/1934 | |
| YUGOSLAVIA | Ratification | 26/06/1937 | |