Granted Patent
Utility
US 4,296,995 · App. 06/117,425
Optical fiber beam splitter couplers employing coatings with dichroic properties
Inventor:
Gary W. Bickel
Patented Case
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Granted: Oct 27, 1981
Filed: Feb 1, 1980
Inventor
Gary W. Bickel
Assignee (at issue)
International Telephone and Telegraph 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.