Granted Patent
Utility
US 4,356,397 · App. 06/160,412
Optical valve position sensor system
Inventors:
Bruce N. Lenderking, Donald P. Garrett
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Jun 18, 1980
Inventors
Bruce N. Lenderking
Donald P. Garrett
Assignee (at issue)
Westinghouse Electric Company LLC
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.