| Country | Action | Action Date | Effective Date |
|---|
| Algeria | Signature | 04/03/1914 | |
| AUSTRIA-HUNGARY | Signature | 03/04/1914 | |
| BELGIUM | Signature | 04/03/1914 | |
| Canada | Signature | 04/03/1914 | |
| CHILE | Signature | 04/03/1914 | |
| CHINA | Signature | 04/03/1914 | |
| COSTA RICA | Signature | 04/03/1914 | |
| DENMARK | Signature | 04/03/1914 | |
| DOMINICAN REPUBLIC | Signature | 04/03/1914 | |
| FRANCE | Signature | 04/03/1914 | |
| GERMANY | Signature | 04/03/1914 | |
| GREECE | Signature | 04/03/1914 | |
| GUATEMALA | Signature | 04/03/1914 | |
| India | Signature | 04/03/1914 | |
| Irish Free State | Signature | 04/03/1914 | |
| ITALY | Signature | 04/03/1914 | |
| JAPAN | Signature | 04/03/1914 | |
| LUXEMBOURG | Signature | 04/03/1914 | |
| MONACO | Signature | 04/03/1914 | |
| Morocco | Signature | 04/03/1914 | |
| NETHERLANDS THE | Signature | 04/03/1914 | |
| ROUMANIA | Signature | 04/03/1914 | |
| RUSSIA | Signature | 04/03/1914 | |
| SERBIA | Signature | 04/03/1914 | |
| SPAIN | Signature | 04/03/1914 | |
| SWEDEN | Signature | 04/03/1914 | |
| SWITZERLAND | Signature | 04/03/1914 | |
| Tunisia | Signature | 04/03/1914 | |
| TURKEY | Signature | 04/03/1914 | |
| UNITED KINGDOM | Signature | 04/03/1914 | |