Pocket Watch Database
Patent Archive
#734174
Patent Information
Recorder Door Open
Austin B. Hayden
July 21, 1903
Patent #734174
| Patent Number: | 734174 |
| Description: | Recorder Door Open |
| Inventor(s): | Austin B. Hayden |
| Assignee: | Hayden Mfg Co |
| Patent Date: | Jul 21, 1903 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
