| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Ratification | 26/11/1924 | |
| ARGENTINE REPUBLIC | Ratification | 04/06/1934 | |
| AUSTRALIA | Signature | 28/09/1923 | |
| AUSTRALIA | Ratification | 20/10/1923 | |
| AUSTRIA | Ratification | 09/10/1924 | |
| BELGIUM | Ratification | 29/10/1924 | |
| BRITISH EMPIRE | Signature | 01/09/1923 | |
| BRITISH EMPIRE | Ratification | 20/10/1923 | |
| BULGARIA | Ratification | 06/03/1925 | |
| CANADA | Signature | 08/09/1923 | |
| CANADA | Ratification | 20/10/1923 | |
| CHILE | Ratification | 23/08/1928 | |
| CHINA | Signature | 15/01/1924 | |
| CHINA | Ratification | 03/06/1926 | |
| CUBA | Signature | 13/09/1923 | |
| CUBA | Ratification | 07/09/1925 | |
| CZECHOSLOVAKIA | Ratification | 30/09/1924 | |
| DENMARK | Ratification | 20/06/1924 | |
| ESTONIA | Ratification | 12/04/1926 | |
| FINLAND | Ratification | 25/03/1924 | |
| FRANCE | Signature | 14/06/1923 | |
| FRANCE | Ratification | 02/06/1925 | |
| GERMANY | Ratification | 06/06/1925 | |
| GREECE | Ratification | 08/06/1927 | |
| GUATEMALA | Ratification | 06/07/1932 | |
| HAITI | Ratification | 02/11/1925 | |
| HUNGARY | Ratification | 14/05/1925 | |
| INDIA | Signature | 13/09/1923 | |
| INDIA | Ratification | 20/10/1923 | |
| IRELAND, REPUBLIC OF | Ratification | 26/06/1925 | |
| ITALY | Ratification | 19/07/1932 | |
| JAPAN | Ratification | 11/05/1925 | |
| LATVIA | Ratification | 16/03/1925 | |
| LITHUANIA | Ratification | 25/05/1928 | |
| LUXEMBOURG | Ratification | 05/04/1928 | |
| MEXICO | Ratification | 12/05/1934 | |
| NETHERLANDS THE | Ratification | 14/08/1924 | |
| NEW ZEALAND | Signature | 05/09/1923 | |
| NEW ZEALAND | Ratification | 20/10/1923 | |
| NORWAY | Signature | 20/10/1923 | |
| NORWAY | Ratification | 08/04/1924 | |
| PANAMA | Ratification | 18/04/1934 | |
| PARAGUAY | Signature | 29/09/1924 | |
| PERSIA | Ratification | 14/08/1928 | |
| PERU | Ratification | 06/07/1931 | |
| POLAND | Signature | 08/11/1923 | |
| POLAND | Ratification | 10/02/1925 | |
| PORTUGAL | Ratification | 13/09/1926 | |
| ROUMANIA | Ratification | 19/07/1923 | |
| SALVADOR | Ratification | 04/05/1928 | |
| SERB-CROAT-SLOVENE STATE | Ratification | 11/03/1927 | |
| SIAM | Signature | 24/10/1923 | |
| SIAM | Ratification | 18/03/1924 | |
| SOUTH AFRICA | Signature | 02/08/1923 | |
| SOUTH AFRICA | Ratification | 20/10/1923 | |
| SPAIN | Ratification | 05/07/1924 | |
| SWEDEN | Ratification | 15/05/1924 | |
| SWITZERLAND | Ratification | 01/11/1924 | |
| UNITED KINGDOM | Signature | 01/09/1923 | |
| UNITED KINGDOM | Ratification | 20/10/1923 | |
| URUGUAY | Ratification | 28/04/1928 | |
| VENEZUELA | Ratification | 11/08/1931 | |