Granted Patent
Utility
US 5,748,811 · App. 08/674,078
Optical switch
Inventors:
Martin R. Amersfoort, Julian Bernard Donald Soole
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Jul 1, 1996
Inventors
Martin R. Amersfoort
Julian Bernard Donald Soole
Assignee (at issue)
Bell Communications Research, 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.