Granted Patent
Utility
US 6,781,736 · App. 10/053,470
Folded liquid-crystal variable optical attenuator
Inventors:
Clifford C. Hoyt, Peter J. Miller
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Nov 2, 2001
Inventors
Clifford C. Hoyt
Peter J. Miller
Assignee (at issue)
Cambridge Research & Instrumentation, 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.