| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Accession | 20/10/1947 | |
| AUSTRALIA | Signature | 10/02/1947 | |
| AUSTRALIA | Ratification | 09/07/1948 | |
| BELGIUM | Signature | 10/02/1947 | |
| BELGIUM | Ratification | 04/09/1948 | |
| BRAZIL | Signature | 10/02/1947 | |
| BRAZIL | Ratification | 04/01/1949 | |
| BYELORUSSIA S S R | Signature | 10/02/1947 | |
| CANADA | Signature | 10/02/1947 | |
| CANADA | Ratification | 15/09/1947 | |
| CHINA | Signature | 10/02/1947 | |
| CHINA | Ratification | 24/11/1947 | |
| CZECHOSLOVAKIA | Signature | 10/02/1947 | |
| CZECHOSLOVAKIA | Ratification | 14/10/1947 | |
| ETHIOPIA | Signature | 10/02/1947 | |
| ETHIOPIA | Ratification | 06/11/1947 | |
| FRANCE | Signature | 10/02/1947 | |
| FRANCE | Ratification | 15/09/1947 | |
| GREECE | Signature | 10/02/1947 | |
| GREECE | Ratification | 28/10/1947 | |
| INDIA | Signature | 10/02/1947 | |
| INDIA | Ratification | 15/09/1947 | |
| IRAQ | Accession | 22/10/1949 | |
| ITALY | Signature | 10/02/1947 | |
| ITALY | Ratification | 15/09/1947 | |
| MEXICO | Accession | 10/04/1948 | |
| NETHERLANDS THE | Signature | 10/02/1947 | |
| NETHERLANDS THE | Ratification | 17/02/1949 | |
| NEW ZEALAND | Signature | 10/02/1947 | |
| NEW ZEALAND | Ratification | 24/12/1947 | |
| PAKISTAN | Accession | 19/09/1947 | |
| POLAND | Signature | 10/02/1947 | |
| POLAND | Ratification | 04/02/1948 | |
| SOUTH AFRICA | Signature | 10/02/1947 | |
| SOUTH AFRICA | Ratification | 04/11/1947 | |
| SOVIET UNION | Signature | 10/02/1947 | |
| SOVIET UNION | Ratification | 15/09/1947 | |
| TUNISIA | Accession | 15/09/1947 | |
| UKRAINE S S R | Signature | 10/02/1947 | |
| UNITED KINGDOM | Signature | 10/02/1947 | |
| UNITED KINGDOM | Ratification | 15/09/1947 | |
| UNITED STATES OF AMERICA | Signature | 10/02/1947 | |
| UNITED STATES OF AMERICA | Ratification | 15/09/1947 | |
| YUGOSLAVIA | Signature | 10/02/1947 | |
| YUGOSLAVIA | Ratification | 04/09/1947 | |