| Country | Action | Action Date | Effective Date |
|---|
| AUSTRIA | Signature | 11/07/1928 | |
| AUSTRIA | Ratification | 26/06/1929 | |
| BELGIUM | Signature | 11/07/1928 | |
| BELGIUM | Ratification | 27/04/1929 | |
| BULGARIA | Signature | 11/07/1928 | |
| CHILE | Signature | 11/07/1928 | |
| Curacao | Extension | 18/04/1932 | |
| CZECHOSLOVAKIA | Signature | 11/07/1928 | |
| CZECHOSLOVAKIA | Ratification | 25/06/1930 | |
| DENMARK | Signature | 11/07/1928 | |
| DENMARK | Ratification | 09/09/1929 | |
| DENMARK | Withdrawal | 30/06/1933 | |
| EGYPT | Signature | 11/07/1928 | |
| ESTONIA | Signature | 11/07/1928 | |
| FINLAND | Signature | 11/07/1928 | |
| FINLAND | Ratification | 06/09/1929 | |
| FRANCE | Signature | 11/07/1928 | |
| FRANCE | Ratification | 31/07/1929 | |
| GERMANY | Signature | 11/07/1928 | |
| GERMANY | Ratification | 23/11/1929 | 30/09/1929 |
| HUNGARY | Signature | 11/07/1928 | |
| HUNGARY | Ratification | 26/07/1929 | |
| HUNGARY | Withdrawal | 01/07/1930 | |
| INDIA | Signature | 11/07/1928 | |
| ITALY | Signature | 11/07/1928 | |
| ITALY | Ratification | 30/09/1929 | |
| JAPAN | Signature | 11/07/1928 | |
| JAPAN | Ratification | 28/09/1929 | |
| JAPAN | Withdrawal | 30/06/1934 | |
| LATVIA | Signature | 11/07/1928 | |
| LUXEMBOURG | Signature | 27/06/1929 | |
| LUXEMBOURG | Ratification | 27/06/1929 | |
| LUXEMBOURG | Withdrawal | 01/07/1930 | |
| NETHERLANDS THE | Signature | 11/07/1928 | |
| NETHERLANDS THE | Ratification | 28/06/1929 | |
| NETHERLANDS THE | Declaration | 18/04/1932 | |
| NETHERLANDS THE | Withdrawal | 30/06/1934 | |
| NORWAY | Signature | 11/07/1928 | |
| NORWAY | Ratification | 26/09/1930 | |
| NORWAY | Withdrawal | 30/06/1933 | |
| POLAND | Signature | 11/07/1928 | |
| POLAND | Ratification | 26/09/1930 | |
| PORTUGAL | Signature | 11/07/1928 | |
| PORTUGAL | Ratification | 30/09/1929 | |
| PORTUGAL | Withdrawal | 30/06/1931 | |
| ROUMANIA | Signature | 11/07/1928 | |
| ROUMANIA | Ratification | 30/06/1929 | |
| SERB-CROAT-SLOVENE STATE | Signature | 11/07/1928 | |
| SERB-CROAT-SLOVENE STATE | Ratification | 30/09/1929 | |
| SIAM | Signature | 11/07/1928 | |
| SWEDEN | Signature | 11/07/1928 | |
| SWEDEN | Ratification | 08/08/1929 | |
| SWITZERLAND | Signature | 11/07/1928 | |
| SWITZERLAND | Ratification | 27/06/1929 | |
| TURKEY | Signature | 11/07/1928 | |
| UNITED KINGDOM | Signature | 11/07/1928 | |
| UNITED KINGDOM | Ratification | 12/04/1929 | |
| UNITED KINGDOM | Withdrawal | 30/06/1933 | |
| UNITED STATES OF AMERICA | Signature | 11/07/1928 | |
| UNITED STATES OF AMERICA | Ratification | 30/09/1929 | |
| UNITED STATES OF AMERICA | Withdrawal | 30/06/1933 | |
| YUGOSLAVIA | Withdrawal | 01/07/1930 | |