Granted Patent
Utility
US 5,997,985 · App. 09/150,579
Method of forming acoustic attenuation chambers using laser processing of multi-layered polymer films
Inventors:
James A. Clarke, Robert K. Kunze, Jr.
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Sep 10, 1998
Inventors
James A. Clarke
Robert K. Kunze, Jr.
Assignee (at issue)
NORTHROP GRUMMAN 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.