Granted Patent
Utility
US 4,251,997 · App. 06/026,463
Control of absorption systems energized from plural storage tanks maintained at different temperatures
Inventor:
Alwin B. Newton
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Apr 2, 1979
Inventor
Alwin B. Newton
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.