Pocket Watch Database
Patent Archive
#452728
Patent Information
Recorder Work Man
Thomas J. Parkinson
May 19, 1891
Patent #452728
| Patent Number: | 452728 |
| Description: | Recorder Work Man |
| Inventor(s): | Thomas J. Parkinson |
| Assignee: | Baum John R |
| Patent Date: | May 19, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
