Granted Patent
Utility
US 5,042,889 · App. 07/506,310
Magnetic activation mechanism for an optical switch
Inventor:
Albert M. Benzoni
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Apr 9, 1990
Inventor
Albert M. Benzoni
Assignee (at issue)
AT&T Bell Laboratories
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.