Granted Patent
Utility
US 4,418,981 · App. 06/340,672
Quadrature fiber-optic interferometer matrix
Inventor:
David W. Stowe
Patented Case
View Patent ↗
Granted: Dec 6, 1983
Filed: Jan 19, 1982
Inventor
David W. Stowe
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.