| Country | Action | Action Date | Effective Date |
|---|
| Antilles | Extension | 01/01/1986 | |
| ARGENTINE REPUBLIC | Signature | 02/12/1946 | |
| Aruba | Extension | 01/01/1986 | |
| AUSTRALIA | Signature | 02/12/1946 | |
| AUSTRALIA | Acceptance | 01/12/1947 | |
| BRAZIL | Signature | 02/12/1946 | |
| CANADA | Signature | 02/12/1946 | |
| CANADA | Acceptance | 12/11/1947 | |
| CHILE | Signature | 02/12/1946 | |
| DENMARK | Signature | 02/12/1946 | |
| DENMARK | Acceptance | 25/08/1947 | |
| FRANCE | Signature | 02/12/1946 | |
| FRANCE | Acceptance | 03/12/1948 | |
| ICELAND | Accession | 21/04/1947 | |
| NETHERLANDS THE | Signature | 02/12/1946 | |
| NETHERLANDS THE | Acceptance | 06/03/1948 | |
| NEW ZEALAND | Signature | 02/12/1946 | |
| NEW ZEALAND | Acceptance | 22/07/1947 | |
| NORWAY | Signature | 02/12/1946 | |
| NORWAY | Acceptance | 27/08/1947 | |
| PERU | Signature | 02/12/1946 | |
| SOUTH AFRICA | Signature | 02/12/1946 | |
| SOUTH AFRICA | Acceptance | 06/11/1947 | |
| SOVIET UNION | Signature | 02/12/1946 | |
| SOVIET UNION | Acceptance | 11/12/1947 | |
| UNITED KINGDOM | Signature | 02/12/1946 | |
| UNITED KINGDOM | Ratification | 17/06/1947 | |
| UNITED KINGDOM | Acceptance | 17/06/1947 | |
| UNITED STATES OF AMERICA | Signature | 02/12/1946 | |
| UNITED STATES OF AMERICA | Acceptance | 18/07/1947 | |