| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ALBANIA | Signature | 02/10/1924 | |
| BELGIUM | Signature | 30/10/1924 | |
| BRAZIL | Signature | 10/10/1924 | |
| BULGARIA | Signature | 02/10/1924 | |
| CHILE | Signature | 16/10/1924 | |
| CZECHOSLOVAKIA | Signature | 02/10/1924 | |
| ESTONIA | Signature | 02/10/1924 | |
| FINLAND | Signature | 18/12/1924 | |
| GREECE | Signature | 02/10/1924 | |
| LATVIA | Signature | 02/10/1924 | |
| PARAGUAY | Signature | 01/11/1924 | |
| POLAND | Signature | 02/10/1924 | |
| PORTUGAL | Signature | 02/10/1924 | |
| SERB-CROAT-SLOVENE STATE | Signature | 02/10/1924 | |
| SPAIN | Signature | 08/12/1924 | |
| UNITED KINGDOM | |||
| URUGUAY | Signature | 05/12/1924 |