Granted Patent
Utility
US 6,236,487 · App. 09/119,561
Optical communication control system
Inventor:
Thomas D. Stephens
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Jul 21, 1998
Inventor
Thomas D. Stephens
Assignee (at issue)
Corvis Corporation
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.