Pocket Watch Database
Patent Archive
#536257
Patent Information
Clock Main Spring Equal
Otto Bartel
March 26, 1895
Patent #536257
| Patent Number: | 536257 |
| Description: | Clock Main Spring Equal |
| Inventor(s): | Otto Bartel |
| Patent Date: | Mar 26, 1895 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
