| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Signature | 21/01/1930 | |
| ALBANIA | Ratification | 12/09/1930 | |
| ARGENTINE REPUBLIC | Signature | 28/12/1935 | |
| AUSTRALIA | Signature | 14/09/1929 | |
| AUSTRALIA | Ratification | 28/08/1930 | |
| AUSTRIA | Signature | 14/09/1929 | |
| AUSTRIA | Ratification | 26/02/1930 | |
| BELGIUM | Signature | 14/09/1929 | |
| BELGIUM | Ratification | 18/11/1929 | |
| BOLIVIA | Signature | 14/09/1929 | |
| BRAZIL | Signature | 14/09/1929 | |
| BRAZIL | Ratification | 26/01/1937 | |
| BULGARIA | Signature | 14/09/1929 | |
| BULGARIA | Ratification | 27/04/1931 | |
| CANADA | Signature | 14/09/1929 | |
| CANADA | Ratification | 28/08/1930 | |
| CHILE | Signature | 20/11/1933 | |
| CHILE | Ratification | 20/11/1933 | |
| CHINA | Signature | 14/09/1929 | |
| CHINA | Ratification | 14/10/1930 | |
| COLOMBIA | Signature | 14/09/1929 | |
| COLOMBIA | Ratification | 06/01/1932 | |
| CUBA | Ratification | 05/01/1931 | |
| CUBA | Reservation | 05/01/1931 | |
| CUBA | Withdrawal Res. | 14/03/1932 | |
| CZECHOSLOVAKIA | Accession | 30/10/1930 | |
| DENMARK | Signature | 14/09/1929 | |
| DENMARK | Ratification | 02/03/1930 | |
| DOMINICAN REPUBLIC | Signature | 14/09/1929 | |
| DOMINICAN REPUBLIC | Ratification | 04/02/1933 | |
| ESTONIA | Signature | 14/09/1929 | |
| ESTONIA | Ratification | 08/09/1930 | |
| ETHIOPIA | Signature | 15/04/1932 | |
| ETHIOPIA | Ratification | 30/03/1935 | |
| FINLAND | Signature | 14/09/1929 | |
| FINLAND | Ratification | 28/08/1930 | |
| FRANCE | Signature | 14/09/1929 | |
| FRANCE | Ratification | 08/05/1931 | |
| GERMANY | Signature | 14/09/1929 | |
| GERMANY | Ratification | 13/08/1930 | |
| GREECE | Signature | 14/09/1929 | |
| GREECE | Ratification | 29/08/1930 | |
| GUATEMALA | Signature | 14/09/1929 | |
| HAYTI | Signature | 14/09/1929 | |
| HAYTI | Ratification | 30/09/1930 | |
| HUNGARY | Signature | 14/09/1929 | |
| HUNGARY | Ratification | 13/08/1930 | |
| INDIA | Signature | 14/09/1929 | |
| INDIA | Ratification | 26/02/1930 | |
| IRELAND, REPUBLIC OF | Signature | 14/09/1929 | |
| IRELAND, REPUBLIC OF | Ratification | 02/08/1930 | |
| ITALY | Signature | 14/09/1929 | |
| ITALY | Ratification | 02/04/1931 | |
| JAPAN | Signature | 14/09/1929 | |
| JAPAN | Ratification | 14/11/1930 | |
| LATVIA | Signature | 14/09/1929 | |
| LATVIA | Ratification | 29/08/1930 | |
| LIBERIA | Signature | 14/09/1929 | |
| LIBERIA | Ratification | 29/08/1930 | |
| LITHUANIA | Signature | 14/09/1929 | |
| LITHUANIA | Ratification | 23/01/1933 | |
| LUXEMBOURG | Signature | 14/09/1929 | |
| LUXEMBOURG | Ratification | 15/09/1930 | |
| NETHERLANDS THE | Signature | 14/09/1929 | |
| NETHERLANDS THE | Ratification | 08/08/1930 | |
| NEW ZEALAND | Signature | 14/09/1929 | |
| NEW ZEALAND | Ratification | 04/06/1930 | |
| NICARAGUA | Signature | 14/09/1929 | |
| NORWAY | Signature | 14/09/1929 | |
| NORWAY | Ratification | 10/04/1930 | |
| PANAMA | Signature | 14/09/1929 | |
| PARAGUAY | Signature | 14/09/1929 | |
| PARAGUAY | Ratification | 11/05/1933 | |
| PERSIA | Signature | 14/09/1929 | |
| PERSIA | Ratification | 25/04/1931 | |
| PERU | Signature | 14/09/1929 | |
| POLAND | Signature | 14/09/1929 | |
| POLAND | Ratification | 13/05/1930 | |
| PORTUGAL | Signature | 14/09/1929 | |
| PORTUGAL | Ratification | 12/06/1930 | |
| ROUMANIA | Signature | 14/09/1929 | |
| ROUMANIA | Ratification | 04/08/1930 | |
| SALVADOR | Signature | 14/09/1929 | |
| SALVADOR | Ratification | 29/08/1930 | |
| SIAM | Signature | 14/09/1929 | |
| SIAM | Ratification | 02/06/1930 | |
| SOUTH AFRICA | Signature | 14/09/1929 | |
| SOUTH AFRICA | Ratification | 17/02/1930 | |
| SPAIN | Signature | 14/09/1929 | |
| SPAIN | Ratification | 15/07/1930 | |
| SWEDEN | Signature | 14/09/1929 | |
| SWEDEN | Ratification | 20/03/1930 | |
| SWITZERLAND | Signature | 14/09/1929 | |
| SWITZERLAND | Ratification | 05/07/1930 | |
| UNITED KINGDOM | Signature | 14/09/1929 | |
| UNITED KINGDOM | Ratification | 12/02/1930 | |
| UNITED STATES OF AMERICA | Signature | 09/12/1929 | |
| UNITED STATES OF AMERICA | Withdrawal | 08/04/1947 | |
| URUGUAY | Signature | 14/09/1929 | |
| URUGUAY | Ratification | 19/09/1933 | |
| VENEZUELA | Signature | 14/09/1929 | |
| VENEZUELA | Ratification | 04/08/1933 | |
| YUGOSLAVIA | Signature | 14/09/1929 | |
| YUGOSLAVIA | Ratification | 27/08/1930 | |