Granted Patent
Utility
US 4,970,463 · App. 07/322,518
Temperature stable proximity sensor with sensing of flux emanating from the lateral surface of a magnet
Inventors:
Ronald J. Wolf, Larry Hedeen
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Mar 13, 1989
Inventors
Ronald J. Wolf
Larry Hedeen
Assignee (at issue)
Durakool, 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.