Pocket Watch Database
Patent Archive
#872971
Patent Information
Clock Key
Arthur H. Porter
December 3, 1907
Patent #872971
| Patent Number: | 872971 |
| Description: | Clock Key |
| Inventor(s): | Arthur H. Porter |
| Assignee: | E Ingraham Co |
| Patent Date: | Dec 3, 1907 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
