| Country | Action | Action Date | Effective Date |
|---|
| ARGENTINA | Signature | 08/09/1951 | |
| ARGENTINA | Ratification | 09/04/1952 | |
| AUSTRALIA | Signature | 08/09/1951 | |
| AUSTRALIA | Ratification | 10/04/1952 | |
| BELGIUM | Signature | 08/09/1951 | |
| BELGIUM | Ratification | 22/08/1952 | |
| BOLIVIA | Signature | 08/09/1951 | |
| BOLIVIA | Ratification | 11/08/1977 | |
| BRAZIL | Signature | 08/09/1951 | |
| BRAZIL | Ratification | 20/05/1952 | |
| CAMBODIA | Signature | 08/09/1951 | |
| CAMBODIA | Ratification | 02/06/1952 | |
| CANADA | Signature | 08/09/1951 | |
| CANADA | Ratification | 17/04/1952 | |
| CEYLON | Signature | 08/09/1951 | |
| CEYLON | Ratification | 28/04/1952 | |
| CHILE | Signature | 08/09/1951 | |
| CHILE | Ratification | 28/04/1954 | |
| COLOMBIA | Signature | 08/09/1951 | |
| COSTA RICA | Signature | 08/09/1951 | |
| COSTA RICA | Ratification | 17/09/1952 | |
| CUBA | Signature | 08/09/1951 | |
| CUBA | Ratification | 12/08/1952 | |
| DOMINICAN REPUBLIC | Signature | 08/09/1951 | |
| DOMINICAN REPUBLIC | Ratification | 06/06/1952 | |
| ECUADOR | Signature | 08/09/1951 | |
| ECUADOR | Ratification | 27/12/1955 | |
| EGYPT | Signature | 08/09/1951 | |
| EGYPT | Ratification | 30/12/1952 | |
| EL SALVADOR | Signature | 08/09/1951 | |
| EL SALVADOR | Ratification | 06/05/1952 | |
| EL SALVADOR | Declaration | 06/05/1952 | |
| ETHIOPIA | Signature | 08/09/1951 | |
| ETHIOPIA | Ratification | 12/06/1952 | |
| FRANCE | Signature | 08/09/1951 | |
| FRANCE | Ratification | 18/04/1952 | |
| GREECE | Signature | 08/09/1951 | |
| GREECE | Ratification | 19/05/1953 | |
| GUATEMALA | Signature | 08/09/1951 | |
| GUATEMALA | Ratification | 23/09/1954 | |
| HAITI | Signature | 08/09/1951 | |
| HAITI | Ratification | 01/05/1953 | |
| HONDURAS | Signature | 08/09/1951 | |
| HONDURAS | Ratification | 04/09/1953 | |
| INDONESIA | Signature | 08/09/1951 | |
| IRAN | Signature | 08/09/1951 | |
| IRAN | Ratification | 29/08/1956 | |
| IRAQ | Signature | 08/09/1951 | |
| IRAQ | Ratification | 18/08/1955 | |
| JAPAN | Signature | 08/09/1951 | |
| JAPAN | Ratification | 28/11/1951 | |
| JAPAN | Declaration | 28/11/1951 | |
| LAOS | Signature | 08/09/1951 | |
| LAOS | Ratification | 20/06/1952 | |
| LAOS | Declaration | 20/06/1952 | |
| LEBANON | Signature | 08/09/1951 | |
| LEBANON | Ratification | 07/01/1954 | |
| LIBERIA | Signature | 08/09/1951 | |
| LIBERIA | Ratification | 29/12/1952 | |
| LUXEMBOURG | Signature | 08/09/1951 | |
| MEXICO | Signature | 08/09/1951 | |
| MEXICO | Ratification | 03/03/1952 | |
| NETHERLANDS THE | Signature | 08/09/1951 | |
| NETHERLANDS THE | Ratification | 17/06/1952 | |
| NEW ZEALAND | Signature | 08/09/1951 | |
| NEW ZEALAND | Ratification | 10/04/1952 | |
| NICARAGUA | Signature | 08/09/1951 | |
| NICARAGUA | Ratification | 04/11/1952 | |
| NORWAY | Signature | 08/09/1951 | |
| NORWAY | Ratification | 19/06/1952 | |
| PAKISTAN | Signature | 08/09/1951 | |
| PAKISTAN | Ratification | 17/04/1952 | |
| PANAMA | Signature | 08/09/1951 | |
| PANAMA | Ratification | 10/04/1953 | |
| PARAGUAY | Signature | 08/09/1951 | |
| PARAGUAY | Ratification | 15/01/1953 | |
| PERU | Signature | 08/09/1951 | |
| PERU | Ratification | 17/06/1952 | |
| PHILIPPINES | Signature | 08/09/1951 | |
| PHILIPPINES | Ratification | 23/07/1956 | |
| SAUDI ARABIA | Signature | 08/09/1951 | |
| SAUDI ARABIA | Ratification | 13/03/1954 | |
| SOUTH AFRICA | Signature | 08/09/1951 | |
| SOUTH AFRICA | Ratification | 10/09/1952 | |
| SYRIA | Signature | 08/09/1951 | |
| SYRIA | Ratification | 29/12/1952 | |
| TURKEY | Signature | 08/09/1951 | |
| TURKEY | Ratification | 24/07/1952 | |
| UNITED KINGDOM | Signature | 08/09/1951 | |
| UNITED KINGDOM | Ratification | 03/01/1952 | |
| UNITED STATES OF AMERICA | Signature | 08/09/1951 | |
| UNITED STATES OF AMERICA | Ratification | 28/04/1952 | |
| UNITED STATES OF AMERICA | Declaration | 28/04/1952 | |
| URUGUAY | Signature | 08/09/1951 | |
| URUGUAY | Ratification | 02/12/1952 | |
| VENEZUELA | Signature | 08/09/1951 | |
| VENEZUELA | Ratification | 20/06/1952 | |
| VIETNAM | Signature | 08/09/1951 | |
| VIETNAM | Ratification | 18/06/1952 | |
| VIETNAM | Declaration | 18/06/1952 | |