| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ARGENTINA | Signature | 09/04/1946 | |
| AUSTRALIA | Signature | 20/03/1946 | |
| CANADA | Signature | 25/03/1946 | |
| UNITED KINGDOM | Signature | 03/05/1946 | |
| UNITED STATES OF AMERICA | Signature | 18/03/1946 | |
| UNITED STATES OF AMERICA | Signature | 03/06/1946 |