Granted Patent
Utility
US 5,159,481 · App. 07/583,786
Polarization scrambler for polarization-sensitive optical devices
Inventor:
Mari W. Maeda
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Sep 14, 1990
Inventor
Mari W. Maeda
Assignee (at issue)
Bell Communications Research, 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.