Pocket Watch Database

Patent Archive
#157913

Patent Information

Watch Center Pinion

Dietrich Gruen

December 22, 1874

Patent #157913
Manufacturer:Columbus Watch Co.
Patent Number:157913
Category:Safety Pinion
Description:Watch Center Pinion
Inventor(s): Dietrich Gruen
Patent Date:Dec 22, 1874
Registration Type:Patent
External Research:https://www.google.c…
Patent Document:  PDF