Granted Patent
Utility
US 4,584,515 · App. 06/687,604
Re-regulation circuit for automobile tachometer detection circuit
Inventor:
Arthur J. Edwards
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Dec 31, 1984
Inventor
Arthur J. Edwards
Assignee (at issue)
Motorola, 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.