Granted Patent
Utility
US 6,137,941 · App. 09/146,446
Variable optical attenuator
Inventor:
Kevin Cyrus Robinson
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Sep 3, 1998
Inventor
Kevin Cyrus Robinson
Assignee (at issue)
LUCENT TECHNOLOGIES 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.