Granted Patent
Utility
US 5,394,376 · App. 08/168,318
Method and apparatus for acoustic attenuation
Inventors:
Laurence R. Riddle, John M. Sewell, Paul Kurtz
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Dec 17, 1993
Inventors
Laurence R. Riddle
John M. Sewell
Paul Kurtz
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.