| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Signature | 12/08/1949 | |
| AUSTRALIA | Acceptance | 28/11/1949 | |
| CANADA | Signature | 12/08/1949 | |
| CANADA | Acceptance | 18/02/1950 | |
| CEYLON | Signature | 12/08/1949 | |
| CEYLON | Acceptance | 16/02/1950 | |
| FIJI | Succession | 01/11/1971 | |
| INDIA | Signature | 12/08/1949 | |
| INDIA | Acceptance | 24/02/1950 | |
| NEW ZEALAND | Signature | 12/08/1949 | |
| NEW ZEALAND | Acceptance | 21/11/1949 | |
| PAKISTAN | Signature | 12/08/1949 | |
| PAKISTAN | Acceptance | 22/02/1950 | |
| SOUTH AFRICA | Signature | 12/08/1949 | |
| SOUTH AFRICA | Acceptance | 03/02/1950 | |
| Southern Rhodesia | Signature | 12/08/1949 | |
| Southern Rhodesia | Acceptance | 16/02/1950 | |
| UNITED KINGDOM | Signature | 12/08/1949 | |
| UNITED KINGDOM | Ratification | 31/10/1949 | |
| UNITED KINGDOM | Acceptance | 31/10/1949 | |
| UNITED STATES OF AMERICA | Signature | 12/08/1949 | |
| UNITED STATES OF AMERICA | Acceptance | 19/01/1950 | |