Pocket Watch Database
Patent Archive
#478562
Patent Information
Timer Furnace Damper
Otis Jr Griggs
July 12, 1892
Patent #478562
| Patent Number: | 478562 |
| Description: | Timer Furnace Damper |
| Inventor(s): | Otis Jr Griggs |
| Patent Date: | Jul 12, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
