| Country | Action | Action Date | Effective Date |
|---|
| ARGENTINE REPUBLIC | Signature | 04/07/1891 | |
| AUSTRIA | Signature | 04/07/1891 | |
| BELGIUM | Signature | 04/07/1891 | |
| BOLIVIA | Accession | 01/07/1892 | |
| BOSNIA AND HERZEGOVINA | Accession | 01/07/1892 | |
| BRAZIL | Signature | 04/07/1891 | |
| BULGARIA | Signature | 04/07/1891 | |
| Canada | Signature | 24/08/1891 | |
| Cape Of Good Hope | Accession | 01/01/1895 | |
| COLOMBIA | Signature | 04/07/1891 | |
| CONGO | Signature | 04/07/1891 | |
| DENMARK | Signature | 04/07/1891 | |
| EGYPT | Signature | 04/07/1891 | |
| FRANCE | Signature | 04/07/1891 | |
| GERMANY | Signature | 04/07/1891 | |
| GREECE | Signature | 04/07/1891 | |
| GUATEMALA | Signature | 04/07/1891 | |
| Hawaii | Signature | 04/07/1891 | |
| HAYTI | Signature | 04/07/1891 | |
| HUNGARY | Signature | 04/07/1891 | |
| India | Signature | 04/07/1891 | |
| ITALY | Signature | 04/07/1891 | |
| JAPAN | Signature | 04/07/1891 | |
| LIBERIA | Signature | 04/07/1891 | |
| LUXEMBOURG | Signature | 04/07/1891 | |
| MEXICO | Signature | 04/07/1891 | |
| MONTENEGRO | Signature | 04/07/1891 | |
| Natal | Accession | 01/07/1892 | |
| NETHERLANDS THE | Signature | 04/07/1891 | |
| NORWAY | Signature | 04/07/1891 | |
| PERSIA | Signature | 04/07/1891 | |
| PERU | Signature | 04/07/1891 | |
| PORTUGAL | Signature | 04/07/1891 | |
| ROUMANIA | Signature | 04/07/1891 | |
| RUSSIA | Signature | 04/07/1891 | |
| SALVADOR | Signature | 04/07/1891 | |
| SERBIA | Signature | 04/07/1891 | |
| SIAM | Signature | 04/07/1891 | |
| SOUTH AFRICA | Accession | 01/07/1892 | |
| SPAIN | Signature | 04/07/1891 | |
| SWEDEN | Signature | 04/07/1891 | |
| SWITZERLAND | Signature | 04/07/1891 | |
| TUNIS | Signature | 04/07/1891 | |
| TURKEY | Signature | 04/07/1891 | |
| UNITED KINGDOM | Signature | 04/07/1891 | |
| UNITED STATES OF AMERICA | Signature | 04/07/1891 | |
| URUGUAY | Signature | 04/07/1891 | |
| VENEZUELA | Signature | 04/07/1891 | |