| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Signature | 15/04/1939 | |
| BELGIUM | Ratification | 23/09/1939 | |
| BULGARIA | Signature | 15/04/1939 | |
| Cyprus | Application | 15/04/1939 | |
| DANZIG | Signature | 15/04/1939 | |
| DENMARK | Signature | 15/04/1939 | |
| DENMARK | Ratification | 12/01/1940 | |
| EGYPT | Signature | 15/04/1939 | |
| ESTONIA | Signature | 15/04/1939 | |
| FINLAND | Signature | 15/04/1939 | |
| FRANCE | Signature | 15/04/1939 | |
| GERMANY | Signature | 15/04/1939 | |
| Gibraltar | Application | 15/04/1939 | |
| HUNGARY | Signature | 15/04/1939 | |
| IRELAND, REPUBLIC OF | Signature | 15/04/1939 | |
| ITALY | Signature | 15/04/1939 | |
| LATVIA | Signature | 15/04/1939 | |
| LEBANON | Signature | 15/04/1939 | |
| LITHUANIA | Signature | 15/04/1939 | |
| Malta | Application | 15/04/1939 | |
| MOROCCO | Signature | 15/04/1939 | |
| NETHERLANDS THE | Signature | 15/04/1939 | |
| NORWAY | Signature | 15/04/1939 | |
| Palestine | Application | 15/04/1939 | |
| POLAND | Signature | 15/04/1939 | |
| PORTUGAL | Signature | 15/04/1939 | |
| ROUMANIA | Signature | 15/04/1939 | |
| SLOVAK REPUBLIC | Signature | 15/04/1939 | |
| SPAIN | Signature | 15/04/1939 | |
| SWEDEN | Signature | 15/04/1939 | |
| SWITZERLAND | Signature | 15/04/1939 | |
| SYRIA | Signature | 15/04/1939 | |
| TUNIS | Signature | 15/04/1939 | |
| UNITED KINGDOM | Signature | 15/04/1939 | |
| VATICAN CITY | Signature | 15/04/1939 | |
| YUGOSLAVIA | Signature | 15/04/1939 | |