| Country | Action | Action Date | Effective Date |
|---|
| ARGENTINE REPUBLIC | Signature | 18/10/1907 | |
| AUSTRIA-HUNGARY | Signature | 18/10/1907 | |
| BELGIUM | Signature | 18/10/1907 | |
| BOLIVIA | Signature | 18/10/1907 | |
| BRAZIL | Signature | 18/10/1907 | |
| BULGARIA | Signature | 18/10/1907 | |
| CHILE | Signature | 18/10/1907 | |
| CHINA | Signature | 18/10/1907 | |
| COLOMBIA | Signature | 18/10/1907 | |
| CUBA | Signature | 18/10/1907 | |
| DENMARK | Signature | 18/10/1907 | |
| DOMINICAN REPUBLIC | Signature | 18/10/1907 | |
| ECUADOR | Signature | 18/10/1907 | |
| FRANCE | Signature | 18/10/1907 | |
| GERMANY | Signature | 18/10/1907 | |
| GREECE | Signature | 18/10/1907 | |
| GUATEMALA | Signature | 18/10/1907 | |
| HAYTI | Signature | 18/10/1907 | |
| ITALY | Signature | 18/10/1907 | |
| JAPAN | Signature | 18/10/1907 | |
| LUXEMBOURG | Signature | 18/10/1907 | |
| MADAGASCAR | Accession | 13/09/2009 | 06/12/2009 |
| MEXICO | Signature | 18/10/1907 | |
| MONTENEGRO | Signature | 18/10/1907 | |
| NETHERLANDS THE | Signature | 18/10/1907 | |
| NETHERLANDS THE | Declaration | 18/10/2010 | |
| NICARAGUA | Signature | 18/10/1907 | |
| NORWAY | Signature | 18/10/1907 | |
| PANAMA | Signature | 18/10/1907 | |
| PERSIA | Signature | 18/10/1907 | |
| PERU | Signature | 18/10/1907 | |
| PORTUGAL | Signature | 18/10/1907 | |
| ROUMANIA | Signature | 18/10/1907 | |
| RUSSIA | Signature | 18/10/1907 | |
| SALVADOR | Signature | 18/10/1907 | |
| SERBIA | Signature | 18/10/1907 | |
| SIAM | Signature | 18/10/1907 | |
| SPAIN | Signature | 18/10/1907 | |
| SWEDEN | Signature | 18/10/1907 | |
| SWITZERLAND | Signature | 18/10/1907 | |
| TURKEY | Signature | 18/10/1907 | |
| UNITED KINGDOM | Signature | 18/10/1907 | |
| UNITED STATES OF AMERICA | Signature | 18/10/1907 | |
| URUGUAY | Signature | 18/10/1907 | |
| VENEZUELA | Signature | 18/10/1907 | |