| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Signature | 13/12/1921 | |
| AUSTRALIA | Ratification | 17/08/1923 | |
| BRITISH EMPIRE | Signature | 13/12/1921 | |
| BRITISH EMPIRE | Ratification | 17/08/1923 | |
| CANADA | Signature | 13/12/1921 | |
| CANADA | Ratification | 17/08/1923 | |
| FRANCE | Signature | 13/12/1921 | |
| FRANCE | Ratification | 17/08/1923 | |
| INDIA | Signature | 13/12/1921 | |
| INDIA | Ratification | 17/08/1923 | |
| JAPAN | Signature | 13/12/1921 | |
| JAPAN | Ratification | 17/08/1923 | |
| NEW ZEALAND | Signature | 13/12/1921 | |
| NEW ZEALAND | Ratification | 17/08/1923 | |
| SOUTH AFRICA | Signature | 13/12/1921 | |
| SOUTH AFRICA | Ratification | 17/08/1923 | |
| UNITED KINGDOM | Signature | 13/12/1921 | |
| UNITED KINGDOM | Ratification | 17/08/1923 | |
| UNITED STATES OF AMERICA | Signature | 13/12/1921 | |
| UNITED STATES OF AMERICA | Ratification | 17/08/1923 | |
| UNITED STATES OF AMERICA | Reservation | 17/08/1923 | |