| Country | Action | Action Date | Effective Date |
|---|
| Australia | Signature | 20/01/1914 | |
| Australia | Ratification | 30/12/1914 | |
| AUSTRIA-HUNGARY | Signature | 20/01/1914 | |
| BELGIUM | Signature | 20/01/1914 | |
| Canada | Signature | 20/01/1914 | |
| Canada | Ratification | 30/12/1914 | |
| DENMARK | Signature | 20/01/1914 | |
| FRANCE | Signature | 20/01/1914 | |
| GERMANY | Signature | 20/01/1914 | |
| ITALY | Signature | 20/01/1914 | |
| NETHERLANDS THE | Signature | 20/01/1914 | |
| NETHERLANDS THE | Ratification | 31/12/1914 | |
| New Zealand | Signature | 20/01/1914 | |
| New Zealand | Ratification | 30/12/1914 | |
| NORWAY | Signature | 20/01/1914 | |
| NORWAY | Ratification | 31/12/1914 | |
| ROUMANIA | Ratification | 01/01/1905 | |
| RUSSIA | Signature | 20/01/1914 | |
| SPAIN | Signature | 20/01/1914 | |
| SPAIN | Ratification | 31/12/1914 | |
| SWEDEN | Signature | 20/01/1914 | |
| SWEDEN | Ratification | 31/12/1914 | |
| UNITED KINGDOM | Signature | 20/01/1914 | |
| UNITED KINGDOM | Ratification | 30/12/1914 | |
| UNITED STATES OF AMERICA | Signature | 20/01/1914 | |