Granted Patent
Utility
US 4,995,693 · App. 07/228,617
Multi-position opto-electronic switch
Inventor:
Mark L. Wilson
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Aug 5, 1988
Inventor
Mark L. Wilson
Assignee (at issue)
Unisys Corporation
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.