Granted Patent
Utility
US 6,239,888 · App. 09/065,685
Terrestrial optical communication network of integrated fiber and free-space links which requires no electro-optical conversion between links
Inventor:
Heinz Willebrand
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Apr 24, 1998
Inventor
Heinz Willebrand
Assignee (at issue)
LightPointe Communications, 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.