Pocket Watch Database
Patent Archive
#432755
Patent Information
Machine Watch Main Spring Polisher
John Logan
July 22, 1890
Patent #432755
| Patent Number: | 432755 |
| Description: | Machine Watch Main Spring Polisher |
| Inventor(s): | John Logan |
| Patent Date: | Jul 22, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
