Granted Patent
Utility
US 4,884,744 · App. 07/005,067
Automotive heating system with multiple independent heat sources
Inventor:
Arvind J. Padgaonkar
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Jan 20, 1987
Inventor
Arvind J. Padgaonkar
Assignee (at issue)
Ford Motor 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.