Pocket Watch Database
Patent Archive
#363550
Patent Information
Machine Lathe Main Spring
Frederick Sedgwick
May 24, 1887
Patent #363550
| Patent Number: | 363550 |
| Description: | Machine Lathe Main Spring |
| Inventor(s): | Frederick Sedgwick |
| Patent Date: | May 24, 1887 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
