| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRIA | Signature | 14/11/1932 | |
| BELGIUM | Signature | 15/07/1932 | |
| BELGIUM | Ratification | 23/09/1933 | |
| CZECHOSLOVAKIA | Signature | 20/01/1934 | |
| FRANCE | Signature | 15/07/1932 | |
| FRANCE | Ratification | 31/12/1932 | |
| ITALY | Signature | 15/07/1932 | |
| ITALY | Ratification | 27/12/1932 | |
| NETHERLANDS THE | Signature | 15/07/1932 | |
| NETHERLANDS THE | Ratification | 20/02/1934 | |
| NETHERLANDS THE | Declaration | 20/02/1934 | |
| SWITZERLAND | Declaration | 01/01/1905 | |
| UNITED KINGDOM | Signature | 15/07/1932 | |
| UNITED KINGDOM | Ratification | 29/12/1932 |