| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BRITISH EMPIRE | Signature | 08/05/1924 | |
| BRITISH EMPIRE | Ratification | 25/08/1925 | |
| FRANCE | Signature | 08/05/1924 | |
| FRANCE | Ratification | 25/08/1925 | |
| ITALY | Signature | 08/05/1924 | |
| ITALY | Ratification | 25/08/1925 | |
| JAPAN | Signature | 08/05/1924 | |
| JAPAN | Ratification | 25/08/1925 | |
| LITHUANIA | Signature | 08/05/1924 | |
| LITHUANIA | Ratification | 27/09/1924 | |
| UNITED KINGDOM | Signature | 08/05/1924 | |
| UNITED KINGDOM | Ratification | 25/08/1925 |