| Country | Action | Action Date | Effective Date |
|---|
| AFGHANISTAN | Accession | 04/04/1923 | |
| ALBANIA | Accession | 13/09/1922 | 13/09/1923 |
| ARGENTINA | Signature | 06/07/1906 | |
| AUSTRIA-HUNGARY | Signature | 06/07/1906 | |
| BELGIUM | Signature | 06/07/1906 | |
| BELGIUM | Ratification | 27/08/1907 | |
| BRAZIL | Signature | 06/07/1906 | |
| BRAZIL | Ratification | 18/06/1907 | |
| BULGARIA | Signature | 06/07/1906 | |
| BULGARIA | Ratification | 03/06/1912 | |
| CHILE | Signature | 06/07/1906 | |
| CHILE | Ratification | 06/09/1909 | |
| CHINA | Signature | 06/07/1906 | |
| COLOMBIA | Accession | 28/10/1907 | 24/01/1908 |
| CONGO | Signature | 06/07/1906 | |
| CONGO | Ratification | 16/04/1907 | |
| COSTA RICA | Accession | 22/08/1911 | |
| CUBA | Accession | 17/03/1908 | 14/04/1909 |
| CZECHOSLOVAKIA | Accession | | 01/12/1920 |
| DANZIG | Accession | 12/10/1922 | |
| DENMARK | Signature | 06/07/1906 | |
| DENMARK | Ratification | 11/06/1907 | |
| EGYPT | Accession | 17/12/1924 | |
| ESTONIA | Accession | 15/04/1922 | |
| FINLAND | Accession | 27/02/1921 | |
| FRANCE | Signature | 06/07/1906 | |
| FRANCE | Ratification | 19/07/1913 | |
| GERMANY | Signature | 06/07/1906 | |
| GERMANY | Ratification | 27/05/1907 | |
| GREECE | Signature | 06/07/1906 | |
| GREECE | Ratification | 27/05/1921 | |
| GUATEMALA | Signature | 06/07/1906 | |
| GUATEMALA | Ratification | 26/03/1912 | |
| HAITI | Accession | 23/09/1919 | |
| HONDURAS | Signature | 06/07/1906 | |
| HONDURAS | Ratification | 27/11/1911 | |
| HUNGARY | Signature | 06/07/1906 | |
| HUNGARY | Ratification | 27/03/1908 | |
| ITALY | Signature | 06/07/1906 | |
| ITALY | Ratification | 09/03/1907 | |
| JAPAN | Signature | 06/07/1906 | |
| JAPAN | Ratification | 23/04/1908 | |
| LATVIA | Accession | 08/04/1923 | |
| LITHUANIA | Accession | 03/09/1922 | |
| LUXEMBOURG | Signature | 06/07/1906 | |
| LUXEMBOURG | Ratification | 27/08/1907 | |
| MEXICO | Signature | 06/07/1906 | |
| MEXICO | Ratification | 04/06/1907 | |
| MONTENEGRO | Signature | 06/07/1906 | |
| NETHERLANDS THE | Signature | 06/07/1906 | |
| NETHERLANDS THE | Ratification | 31/07/1908 | |
| NICARAGUA | Accession | 17/06/1907 | |
| NORWAY | Signature | 06/07/1906 | |
| NORWAY | Ratification | 29/11/1909 | |
| PARAGUAY | Accession | 11/01/1911 | |
| PERSIA | Signature | 06/07/1906 | |
| PERU | Signature | 06/07/1906 | |
| POLAND | Accession | 15/07/1920 | |
| PORTUGAL | Signature | 06/07/1906 | |
| PORTUGAL | Ratification | 12/11/1911 | |
| ROUMANIA | Signature | 06/07/1906 | |
| ROUMANIA | Ratification | 03/08/1911 | |
| RUSSIA | Signature | 06/07/1906 | |
| RUSSIA | Ratification | 09/02/1907 | |
| SALVADOR | Accession | 21/10/1911 | |
| SERBIA | Signature | 06/07/1906 | |
| SERBIA | Ratification | 09/10/1909 | |
| SIAM | Signature | 06/07/1906 | |
| SIAM | Ratification | 29/01/1907 | |
| SPAIN | Signature | 06/07/1906 | |
| SWEDEN | Signature | 06/07/1906 | |
| SWEDEN | Ratification | 13/07/1911 | |
| SWITZERLAND | Signature | 06/07/1906 | |
| SWITZERLAND | Ratification | 16/04/1907 | |
| TURKEY | Accession | 24/08/1907 | 03/09/1907 |
| UNITED KINGDOM | Signature | 06/07/1906 | |
| UNITED KINGDOM | Ratification | 25/03/1907 | |
| UNITED KINGDOM | Ratification | 16/04/1907 | |
| UNITED KINGDOM | Withdrawal Res. | 08/07/1914 | |
| UNITED STATES OF AMERICA | Signature | 06/07/1906 | |
| UNITED STATES OF AMERICA | Ratification | 09/02/1907 | |
| URUGUAY | Signature | 06/07/1906 | |
| URUGUAY | Ratification | 25/11/1919 | |
| VENEZUELA | Accession | 14/08/1907 | |