| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRIA | Signature | 01/06/1889 | |
| BELGIUM | Signature | 01/06/1889 | |
| GERMANY | Signature | 01/06/1889 | |
| HUNGARY | Signature | 01/06/1889 | |
| ITALY | Signature | 01/06/1889 | |
| NETHERLANDS THE | Signature | 01/06/1889 | |
| RUSSIA | Signature | 01/06/1889 | |
| SPAIN | Signature | 01/06/1889 | |
| UNITED KINGDOM | Signature | 01/06/1889 |