Pocket Watch Database
Patent Archive
#1544652
Patent Information
Clock Clepsydra
Theodore Knutson
July 7, 1925
Patent #1544652
| Patent Number: | 1544652 |
| Description: | Clock Clepsydra |
| Inventor(s): | Theodore Knutson |
| Patent Date: | Jul 7, 1925 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
