Granted Patent
Utility
US 4,834,481 · App. 06/796,828
In-line single-mode fiber optic multiplexer/demultiplexer
Inventors:
Christopher M. Lawson, Vincent J. Tekippe, Paul M. Kopera
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Nov 12, 1985
Inventors
Christopher M. Lawson
Vincent J. Tekippe
Paul M. Kopera
Assignee (at issue)
Gould 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.