Pocket Watch Database
Patent Archive
#734175
Patent Information
Recorder Door Open
Austin B. Hayden
July 21, 1903
Patent #734175
Patent Number: | 734175 |
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: |