| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ETHIOPIA | Signature | 21/08/1930 | |
| ETHIOPIA | Ratification | 19/02/1932 | |
| FRANCE | Signature | 21/08/1930 | |
| FRANCE | Ratification | 19/02/1932 | |
| FRANCE | Declaration | 19/10/1938 | |
| ITALY | Signature | 21/08/1930 | |
| ITALY | Ratification | 19/02/1932 | |
| UNITED KINGDOM | Signature | 21/08/1930 | |
| UNITED KINGDOM | Ratification | 19/02/1932 |