Pocket Watch Database
Patent Archive
#989310
Patent Information
Clock Alarm
Arthur H. Porter
Elmer E. Stockton
April 11, 1911
Patent #989310
| Patent Number: | 989310 |
| Description: | Clock Alarm |
| Inventor(s): |
Arthur H. Porter Elmer E. Stockton |
| Assignee: | E Ingraham Co |
| Patent Date: | Apr 11, 1911 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
