Granted Patent
Utility
US 4,736,360 · App. 06/887,710
Bulk optic echelon multi/demultiplexer
Inventor:
Donald H. McMahon
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Jul 21, 1986
Inventor
Donald H. McMahon
Assignee (at issue)
Polaroid 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.