| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| GERMANY | Signature | 14/06/1889 | |
| GERMANY | Ratification | 12/04/1890 | |
| UNITED KINGDOM | Signature | 14/06/1889 | |
| UNITED KINGDOM | Ratification | 12/04/1890 | |
| UNITED STATES OF AMERICA | Signature | 14/06/1889 | |
| UNITED STATES OF AMERICA | Ratification | 12/04/1890 |