| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Signature | 25/09/1950 | |
| BELGIUM | Signature | 07/09/1950 | |
| BRAZIL | Signature | 26/10/1950 | |
| CUBA | Signature | 04/10/1950 | |
| CUBA | Reservation | 04/10/1950 | |
| CZECHOSLOVAKIA | Signature | 26/09/1950 | |
| DOMINICAN REPUBLIC | Signature | 06/09/1950 | |
| FRANCE | Signature | 18/09/1950 | |
| HAITI | Signature | 30/09/1950 | |
| INDONESIA | Signature | 20/09/1950 | |
| NETHERLANDS THE | Signature | 07/09/1950 | |
| PERU | Signature | 01/09/1950 | |
| PHILIPPINES | Signature | 25/09/1950 | |
| POLAND | Signature | 14/09/1950 | |
| PORTUGAL | Signature | 15/09/1950 | |
| SOUTH AFRICA | Signature | 31/08/1950 | |
| UNITED KINGDOM | Signature | 31/08/1950 | |
| UNITED STATES OF AMERICA | Signature | 02/10/1950 | |
| UNITED STATES OF AMERICA | Ratification | 02/08/1952 | |
| YUGOSLAVIA | Signature | 28/09/1950 | |