| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BELGIUM | Signature | 04/01/1946 | |
| CZECHOSLOVAKIA | Accession | 19/07/1946 | |
| DENMARK | Signature | 04/01/1946 | |
| FRANCE | Signature | 04/01/1946 | |
| GREECE | Signature | 04/01/1946 | |
| LUXEMBOURG | Signature | 04/01/1946 | |
| NETHERLANDS THE | Signature | 04/01/1946 | |
| NORWAY | Signature | 04/01/1946 | |
| POLAND | Accession | 14/03/1946 | |
| TURKEY | Signature | 04/01/1946 | |
| UNITED KINGDOM | Signature | 04/01/1946 | |
| UNITED STATES OF AMERICA | Signature | 04/01/1946 |