Pocket Watch Database
Patent Archive
#497422
Patent Information
Clock Key
Friedrich Baum
May 16, 1893
Patent #497422
Patent Number: | 497422 |
Description: | Clock Key |
Inventor(s): | Friedrich Baum |
Assignee: | Hirschfeld Ferdinand |
Patent Date: | May 16, 1893 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |