Pocket Watch Database
Patent Archive
#922256
Patent Information
Timer Furnace Damper
John T. Callaway
May 18, 1909
Patent #922256
| Patent Number: | 922256 |
| Description: | Timer Furnace Damper |
| Inventor(s): | John T. Callaway |
| Patent Date: | May 18, 1909 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
