Granted Patent
Utility
US 5,757,557 · App. 08/872,002
Beam-forming lens with internal cavity that prevents front losses
Inventors:
Vladimir Medvedev, William A. Parkyn
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Jun 9, 1997
Inventors
Vladimir Medvedev
William A. Parkyn
Assignee (at issue)
TIR Technologies, 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.