Granted Patent
Utility
US 4,752,210 · App. 06/588,723
Power vent and control for furnace
Inventor:
Bryan O. Trent
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: Mar 12, 1984
Inventor
Bryan O. Trent
Assignee (at issue)
Heil-Quaker Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.