Granted Patent
Utility
US 4,974,930 · App. 07/434,146
Mode scrambler with non-invasive fabrication in an optical fiber's cladding
Inventors:
Lee L. Blyler, Jr., Leonard G. Cohen, Gary J. Grimes, Lawrence J. Haas
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Nov 13, 1989
Inventors
Lee L. Blyler, Jr.
Leonard G. Cohen
Gary J. Grimes
Lawrence J. Haas
Assignee (at issue)
AT&T Bell Laboratories
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.