Pocket Watch Database
Patent Archive
#455787
Patent Information
Timepiece Balance Wheel For
Hugo Bilgram
July 14, 1891
Patent #455787
| Patent Number: | 455787 |
| Description: | Timepiece Balance Wheel For |
| Inventor(s): | Hugo Bilgram |
| Patent Date: | Jul 14, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
