Pocket Watch Database
Patent Archive
#629370
Patent Information
Beat Adjust For Pendulum
Harry D. Keeler
July 25, 1899
Patent #629370
Patent Number: | 629370 |
Description: | Beat Adjust For Pendulum |
Inventor(s): | Harry D. Keeler |
Patent Date: | Jul 25, 1899 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |