| Country | Action | Action Date | Effective Date |
|---|
| AUSTRALIA | Accession | 22/09/1952 | |
| AUSTRIA-HUNGARY | Declaration | 01/01/1905 | |
| AUSTRIA-HUNGARY | Signature | 29/11/1906 | |
| AUSTRIA-HUNGARY | Reservation | 29/11/1906 | |
| BELGIUM | Signature | 29/11/1906 | |
| BULGARIA | Signature | 29/11/1906 | |
| COSTA RICA | Accession | 21/03/1952 | |
| DENMARK | Signature | 29/11/1906 | |
| DOMINICAN REPUBLIC | Accession | 28/04/1952 | |
| FRANCE | Signature | 29/11/1906 | |
| GERMANY | Signature | 29/11/1906 | |
| GERMANY | Reservation | 29/11/1906 | |
| GREECE | Signature | 29/11/1906 | |
| HOLY SEE | Accession | 08/01/1952 | |
| ITALY | Signature | 29/11/1906 | |
| LUXEMBOURG | Signature | 29/11/1906 | |
| Natal | Extension | 01/01/1905 | |
| NETHERLANDS THE | Signature | 29/11/1906 | |
| NORWAY | Signature | 29/11/1906 | |
| PERU | Accession | 05/09/1952 | |
| PORTUGAL | Reservation | 29/11/1906 | |
| RUSSIA | Signature | 29/11/1906 | |
| SERBIA | Signature | 29/11/1906 | |
| SOUTH AFRICA | Accession | 05/07/1952 | |
| SPAIN | Signature | 29/11/1906 | |
| Straits Settlements | Extension | 01/01/1905 | |
| SWEDEN | Signature | 29/11/1906 | |
| SWEDEN | Reservation | 29/11/1906 | |
| SWITZERLAND | Signature | 29/11/1906 | |
| UNITED KINGDOM | Signature | 29/11/1906 | |
| UNITED KINGDOM | Reservation | 29/11/1906 | |
| UNITED STATES OF AMERICA | Signature | 29/11/1906 | |
| UNITED STATES OF AMERICA | Reservation | 29/11/1906 | |