| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BELGIUM | Signature | 04/07/1936 | |
| DENMARK | Signature | 04/07/1936 | |
| FRANCE | Signature | 04/07/1936 | |
| NETHERLANDS THE | Signature | 04/07/1936 | |
| NORWAY | Signature | 04/07/1936 | |
| SPAIN | Signature | 27/01/1937 | |
| SWITZERLAND | Signature | 04/07/1936 | |
| UNITED KINGDOM | Signature | 04/07/1936 | |
| UNITED KINGDOM | Reservation | 04/07/1936 | |
| UNITED KINGDOM | Declaration | 04/07/1936 |