| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Signature | 23/03/1949 | |
| AUSTRALIA | Acceptance | 30/06/1949 | |
| AUSTRIA | Signature | 23/03/1949 | |
| AUSTRIA | Acceptance | 29/06/1949 | |
| Bahrain | Withdrawal | 14/06/1950 | |
| BELGIUM | Signature | 23/03/1949 | |
| BELGIUM | Ratification | 17/06/1949 | |
| BOLIVIA | Signature | 13/04/1949 | |
| BOLIVIA | Acceptance | 26/09/1949 | |
| BRAZIL | Signature | 25/03/1949 | |
| BRAZIL | Acceptance | 28/10/1949 | |
| CANADA | Signature | 23/03/1949 | |
| CANADA | Acceptance | 12/05/1949 | |
| CEYLON | Signature | 23/03/1949 | |
| CEYLON | Acceptance | 16/06/1949 | |
| CHINA | Signature | 23/03/1949 | |
| COLOMBIA | Signature | 23/03/1949 | |
| COSTA RICA | Accession | 17/04/1950 | |
| CUBA | Signature | 23/03/1949 | |
| CUBA | Acceptance | 27/05/1949 | |
| DENMARK | Signature | 23/03/1949 | |
| DENMARK | Acceptance | 21/04/1949 | |
| DOMINICAN REPUBLIC | Signature | 23/03/1949 | |
| DOMINICAN REPUBLIC | Acceptance | 05/09/1949 | |
| ECUADOR | Signature | 14/04/1949 | |
| ECUADOR | Acceptance | 03/10/1949 | |
| EGYPT | Signature | 23/03/1949 | |
| EGYPT | Acceptance | 24/08/1949 | |
| EL SALVADOR | Signature | 23/03/1949 | |
| EL SALVADOR | Acceptance | 22/09/1949 | |
| FRANCE | Signature | 23/03/1949 | |
| FRANCE | Acceptance | 01/07/1949 | |
| GERMANY FEDERAL REPUBLIC | Accession | 15/05/1950 | |
| GREECE | Signature | 23/03/1949 | |
| GREECE | Acceptance | 30/06/1949 | |
| GUATEMALA | Signature | 23/03/1949 | |
| GUATEMALA | Acceptance | 14/11/1949 | |
| HAITI | Accession | 23/11/1949 | |
| HONDURAS | Accession | 23/01/1951 | |
| ICELAND | Accession | 02/01/1951 | |
| INDIA | Signature | 23/03/1949 | |
| INDIA | Acceptance | 30/06/1949 | |
| INDONESIA | Accession | 02/11/1950 | |
| IRELAND, REPUBLIC OF | Signature | 23/03/1949 | |
| IRELAND, REPUBLIC OF | Acceptance | 27/06/1949 | |
| ISRAEL | Signature | 23/03/1949 | |
| ISRAEL | Acceptance | 28/06/1949 | |
| ITALY | Signature | 23/03/1949 | |
| ITALY | Acceptance | 07/07/1949 | |
| JAPAN | Accession | 23/07/1951 | |
| Kuwait | Withdrawal | 14/06/1950 | |
| LEBANON | Signature | 23/03/1949 | |
| LEBANON | Acceptance | 30/06/1949 | |
| LIBERIA | Signature | 23/03/1949 | |
| LIBERIA | Acceptance | 19/06/1950 | |
| MEXICO | Signature | 15/04/1949 | |
| MEXICO | Acceptance | 16/09/1949 | |
| NETHERLANDS THE | Signature | 23/03/1949 | |
| NETHERLANDS THE | Acceptance | 29/06/1949 | |
| NEW ZEALAND | Signature | 25/03/1949 | |
| NEW ZEALAND | Acceptance | 27/06/1949 | |
| NICARAGUA | Signature | 23/03/1949 | |
| NICARAGUA | Acceptance | 31/05/1949 | |
| NORWAY | Signature | 13/04/1949 | |
| NORWAY | Acceptance | 01/08/1949 | |
| PANAMA | Signature | 12/04/1949 | |
| PANAMA | Acceptance | 31/05/1949 | |
| PERU | Signature | 15/04/1949 | |
| PERU | Acceptance | 29/06/1949 | |
| PHILIPPINES | Signature | 23/03/1949 | |
| PHILIPPINES | Acceptance | 27/02/1950 | |
| PORTUGAL | Signature | 23/03/1949 | |
| PORTUGAL | Acceptance | 30/06/1949 | |
| Qatar | Withdrawal | 14/06/1950 | |
| SAUDI ARABIA | Signature | 23/03/1949 | |
| SAUDI ARABIA | Acceptance | 30/06/1949 | |
| SOUTH AFRICA | Signature | 23/03/1949 | |
| SOUTH AFRICA | Acceptance | 29/06/1949 | |
| SPAIN | Accession | 11/08/1956 | |
| SWEDEN | Signature | 11/04/1949 | |
| SWEDEN | Acceptance | 28/06/1949 | |
| SWITZERLAND | Signature | 11/04/1949 | |
| SWITZERLAND | Acceptance | 28/06/1949 | |
| Trucial States | Withdrawal | 14/06/1950 | |
| UNITED KINGDOM | Signature | 23/03/1949 | |
| UNITED KINGDOM | Signature | 27/03/1949 | |
| UNITED KINGDOM | Acceptance | 27/06/1949 | |
| UNITED STATES OF AMERICA | Acceptance | 17/06/1949 | |
| URUGUAY | Signature | 23/04/1949 | |
| VENEZUELA | Accession | 12/04/1949 | |