| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Signature | 09/12/1948 | |
| AUSTRIA | Acceptance | 10/11/1949 | |
| BURMA | Signature | 09/12/1948 | |
| CANADA | Signature | 09/12/1948 | |
| CANADA | Acceptance | 09/12/1948 | |
| DENMARK | Acceptance | 27/09/1949 | |
| EGYPT | Signature | 09/12/1948 | |
| EGYPT | Acceptance | 09/12/1948 | |
| FINLAND | Acceptance | 17/08/1949 | |
| FRANCE | Acceptance | 11/01/1949 | |
| GHANA | Accession | 07/04/1958 | |
| GREECE | Acceptance | 09/10/1950 | |
| INDIA | Acceptance | 14/03/1949 | |
| IRELAND, REPUBLIC OF | Acceptance | 28/02/1952 | |
| ISRAEL | Acceptance | 28/12/1950 | |
| ITALY | Signature | 09/12/1948 | |
| ITALY | Acceptance | 20/05/1949 | |
| JAPAN | Acceptance | 02/12/1952 | |
| NETHERLANDS THE | Acceptance | 13/04/1950 | |
| NORWAY | Acceptance | 22/03/1949 | |
| PAKISTAN | Signature | 03/03/1952 | |
| SOUTH AFRICA | Signature | 09/12/1948 | |
| SOUTH AFRICA | Acceptance | 10/12/1948 | |
| Southern Rhodesia | Extension | 02/12/1949 | |
| SWEDEN | Signature | 09/12/1948 | |
| SWEDEN | Acceptance | 09/12/1948 | |
| SWITZERLAND | Acceptance | 23/01/1970 | |
| UNITED KINGDOM | Signature | 09/12/1948 | |
| UNITED KINGDOM | Extension | 02/12/1949 | |
| ZIMBABWE | Succession | 01/12/1998 | |