Granted Patent
Utility
US 4,234,903 · App. 05/881,326
Inductive load driver circuit effecting slow hold current delay and fast turn off current decay
Inventor:
Patrick D. Harper
Patented Case
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Granted: Nov 18, 1980
Filed: Feb 27, 1978
Inventor
Patrick D. Harper
Assignee (at issue)
Bendix Limited
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.