Granted Patent
Utility
US 4,269,261 · App. 06/080,361
Microcomputer control for supplemental heating in a heat pump
Inventors:
Kenneth J. Kountz, Kenneth W. Cooper, Frederic H. Abendschein
Patented Case
View Patent ↗
Granted: May 26, 1981
Filed: Sep 28, 1979
Inventors
Kenneth J. Kountz
Kenneth W. Cooper
Frederic H. Abendschein
Assignee (at issue)
BorgWarner Inc.
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.