Pocket Watch Database
Patent Archive
#342446
Patent Information
Metronome Pocket
George Lehr
May 25, 1886
Patent #342446
| Patent Number: | 342446 |
| Description: | Metronome Pocket |
| Inventor(s): | George Lehr |
| Patent Date: | May 25, 1886 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
