Granted Patent
Utility
US 4,841,221 · App. 07/186,517
Position-sensing circuit
Inventors:
Jonathan A. Barney, Arjuna Ragunath Karunaratne
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Apr 27, 1988
Inventors
Jonathan A. Barney
Arjuna Ragunath Karunaratne
Assignee (at issue)
Lutron Electronics Co., 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.