Granted Patent
Utility
US 5,505,076 · App. 08/375,923
Vehicle fuel usage tracking device
Inventors:
Michael K. Parkman, John Whittaker, Curtis J. Donaldson
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Jan 20, 1995
Inventors
Michael K. Parkman
John Whittaker
Curtis J. Donaldson
Assignee (at issue)
Alternative Fuel Technology Systems, Ltd. Co.
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.