Granted Patent
Utility
US 6,553,175 · App. 09/765,059
Variable optical attenuator
Inventor:
Martin A. Jaspan
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Jan 17, 2001
Inventor
Martin A. Jaspan
Assignee (at issue)
Sycamore Networks, 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.