Granted Patent
Utility
US 5,377,166 · App. 08/186,392
Polyhedral directional transducer array
Inventor:
Philip M. Kuhn
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Jan 25, 1994
Inventor
Philip M. Kuhn
Assignee (at issue)
LOCKHEED MARTIN 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.