| Country | Action | Action Date | Effective Date |
|---|
| ARGENTINE REPUBLIC | Signature | 15/12/1946 | |
| ARGENTINE REPUBLIC | Acceptance | 12/03/1948 | |
| AUSTRALIA | Signature | 13/05/1947 | |
| BELGIUM | Signature | 01/05/1947 | |
| BELGIUM | Acceptance | 30/03/1948 | |
| BOLIVIA | Signature | 05/06/1947 | |
| BRAZIL | Signature | 01/07/1947 | |
| CANADA | Signature | 16/12/1946 | |
| CANADA | Acceptance | 07/08/1947 | |
| CHINA | Signature | 29/04/1947 | |
| DENMARK | Signature | 20/08/1948 | |
| DOMINICAN REPUBLIC | Signature | 17/12/1946 | |
| DOMINICAN REPUBLIC | Acceptance | 22/10/1947 | |
| FRANCE | Signature | 17/12/1946 | |
| FRANCE | Acceptance | 03/03/1948 | |
| GUATEMALA | Signature | 16/12/1946 | |
| GUATEMALA | Acceptance | 28/07/1947 | |
| HONDURAS | Signature | 18/12/1946 | |
| ICELAND | Signature | 12/05/1947 | |
| ITALY | Signature | 24/03/1949 | |
| LIBERIA | Signature | 31/12/1946 | |
| LUXEMBOURG | Acceptance | 05/08/1948 | |
| NETHERLANDS THE | Signature | 28/01/1947 | |
| NETHERLANDS THE | Acceptance | 11/08/1947 | |
| NEW ZEALAND | Signature | 17/03/1947 | |
| NORWAY | Signature | 04/02/1947 | |
| NORWAY | Acceptance | 18/08/1947 | |
| PANAMA | Signature | 23/06/1947 | |
| PERU | Signature | 25/07/1947 | |
| PHILIPPINES | Signature | 18/12/1946 | |
| SWITZERLAND | Acceptance | 28/03/1949 | |
| UNITED KINGDOM | Signature | 05/02/1947 | |
| UNITED KINGDOM | Ratification | 05/02/1947 | |
| UNITED STATES OF AMERICA | Signature | 16/12/1946 | |
| UNITED STATES OF AMERICA | Acceptance | 03/07/1947 | |
| VENEZUELA | Acceptance | 13/09/1948 | |