Pocket Watch Database
Patent Archive
#507912
Patent Information
Machine Watch Demagnetize
Boiteaux Frank M. La
October 31, 1893
Patent #507912
| Patent Number: | 507912 |
| Description: | Machine Watch Demagnetize |
| Inventor(s): | Boiteaux Frank M. La |
| Assignee: | Varwig Henry |
| Patent Date: | Oct 31, 1893 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
