Pocket Watch Database
Patent Archive
#2150967
Patent Information
Metronome Electric Driven
Frederick Franz
March 21, 1939
Patent #2150967
| Patent Number: | 2150967 |
| Description: | Metronome Electric Driven |
| Inventor(s): | Frederick Franz |
| Patent Date: | Mar 21, 1939 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
