Pocket Watch Database
Patent Archive
#178371
Patent Information
Watch Spring Barrel
Sherman D. Johnson
June 6, 1876
Patent #178371
| Patent Number: | 178371 |
| Description: | Watch Spring Barrel |
| Inventor(s): | Sherman D. Johnson |
| Patent Date: | Jun 6, 1876 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
