Granted Patent
Utility
US 4,549,149 · App. 06/483,408
Current to frequency converter switched to increased frequency when current input low
Inventor:
John K. Michalik
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Apr 8, 1983
Inventor
John K. Michalik
Assignee (at issue)
Warner Lambert Technologies, 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.