| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| CZECHOSLOVAKIA | Signature | 14/03/1924 | |
| FRANCE | Signature | 14/03/1924 | |
| HUNGARY | Signature | 14/03/1924 | |
| ITALY | Signature | 14/03/1924 | |
| ROUMANIA | Signature | 14/03/1924 | |
| SERB-CROAT-SLOVENE STATE | Signature | 14/03/1924 | |
| UNITED KINGDOM | Signature | 14/03/1924 |