| Country | Action | Action Date | Effective Date |
|---|
| AUSTRIA-HUNGARY | Accession | 01/01/1905 | |
| BELGIUM | Signature | 08/06/1899 | |
| BELGIUM | Ratification | 01/01/1905 | |
| CONGO | Signature | 08/06/1899 | |
| CONGO | Ratification | 01/01/1905 | |
| DENMARK | Accession | 01/01/1905 | |
| FRANCE | Signature | 08/06/1899 | |
| FRANCE | Ratification | 01/01/1905 | |
| GERMANY | Signature | 08/06/1899 | |
| GERMANY | Ratification | 01/01/1905 | |
| ITALY | Signature | 08/06/1899 | |
| ITALY | Ratification | 08/06/1900 | |
| LIBERIA | Accession | 01/01/1905 | |
| NETHERLANDS THE | Signature | 08/06/1899 | |
| NETHERLANDS THE | Ratification | 01/01/1905 | |
| PERSIA | Accession | 01/01/1905 | |
| PORTUGAL | Signature | 08/06/1899 | |
| PORTUGAL | Ratification | 01/01/1905 | |
| RUSSIA | Signature | 08/06/1899 | |
| RUSSIA | Ratification | 01/01/1905 | |
| SPAIN | Signature | 08/06/1899 | |
| SPAIN | Ratification | 01/01/1905 | |
| SWEDEN AND NORWAY | Signature | 08/06/1899 | |
| SWEDEN AND NORWAY | Ratification | 01/01/1905 | |
| TURKEY | Signature | 08/06/1899 | |
| TURKEY | Ratification | 01/01/1905 | |
| UNITED KINGDOM | Signature | 08/06/1899 | |
| UNITED KINGDOM | Ratification | 20/07/1899 | |
| UNITED STATES OF AMERICA | Accession | 01/02/1901 | |