Pocket Watch Database
Patent Archive
#478284
Patent Information
Recorder Work Man
John Caspar Koch
July 5, 1892
Patent #478284
| Patent Number: | 478284 |
| Description: | Recorder Work Man |
| Inventor(s): | John Caspar Koch |
| Patent Date: | Jul 5, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
