Pocket Watch Database
Patent Archive
#20888
Patent Information
Watch Escape
Jacob Muma
July 13, 1858
Patent #20888
Patent Number: | 20888 |
Description: | Watch Escape |
Inventor(s): | Jacob Muma |
Patent Date: | Jul 13, 1858 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |