Granted Patent
Utility
US 6,462,847 · App. 09/823,175
Method and apparatus for free-space optical communication without electro-optical conversion
Inventor:
Heinz Willebrand
Patented Case
View Patent ↗
Granted: Oct 8, 2002
Filed: Mar 29, 2001
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.