Pocket Watch Database
Patent Archive
#449635
Patent Information
Metronome
Arthur G. Pinfold
March 31, 1891
Patent #449635
| Patent Number: | 449635 |
| Description: | Metronome |
| Inventor(s): | Arthur G. Pinfold |
| Patent Date: | Mar 31, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
