Pocket Watch Database
Patent Archive
#699863
Patent Information
Demagnetizer Watch
Gustav Boettger
May 13, 1902
Patent #699863
| Patent Number: | 699863 |
| Description: | Demagnetizer Watch |
| Inventor(s): | Gustav Boettger |
| Patent Date: | May 13, 1902 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
