Granted Patent
Utility
US 4,361,809 · App. 06/208,737
Battery diagnostic method and apparatus
Inventors:
Ronald J. Bil, Robert H. Lewis
Patented Case
View Patent ↗
Granted: Nov 30, 1982
Filed: Nov 20, 1980
Inventors
Ronald J. Bil
Robert H. Lewis
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.