Granted Patent
Utility
US 6,011,855 · App. 08/819,614
Piezoelectric film sonic emitter
Inventors:
Alan Robert Selfridge, Pierre Khuri-Yakub
Patented Case
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Granted: Jan 4, 2000
Filed: Mar 17, 1997
Inventors
Alan Robert Selfridge
Pierre Khuri-Yakub
Assignee (at issue)
American Technology 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.