Pocket Watch Database
Patent Archive
#996499
Patent Information
Safety Spring Barrel
Robert L. Marshall
June 27, 1911
Patent #996499
| Patent Number: | 996499 |
| Description: | Safety Spring Barrel |
| Inventor(s): | Robert L. Marshall |
| Patent Date: | Jun 27, 1911 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
