Granted Patent
Utility
US 5,680,021 · App. 08/477,374
Systems and methods for controlling a draft inducer for a furnace
Inventor:
Robert K. Hollenbeck
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jun 7, 1995
Inventor
Robert K. Hollenbeck
Assignee (at issue)
General Electric Company
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.