| Country | Action | Action Date | Effective Date |
|---|
| BRITISH EMPIRE | Signature | 24/07/1923 | |
| BRITISH EMPIRE | Ratification | 06/08/1924 | |
| FRANCE | Signature | 24/07/1923 | |
| FRANCE | Ratification | 30/08/1924 | |
| GREECE | Signature | 24/07/1923 | |
| GREECE | Ratification | 11/02/1924 | |
| ITALY | Signature | 24/07/1923 | |
| ITALY | Ratification | 06/08/1924 | |
| JAPAN | Signature | 24/07/1923 | |
| JAPAN | Ratification | 06/08/1924 | |
| JAPAN | Declaration | 08/09/1951 | |
| ROUMANIA | Signature | 24/07/1923 | |
| ROUMANIA | Ratification | 01/10/1928 | |
| TURKEY | Signature | 24/07/1923 | |
| TURKEY | Ratification | 31/03/1924 | |
| UNITED KINGDOM | Signature | 24/07/1923 | |
| UNITED KINGDOM | Ratification | 06/08/1924 | |