Granted Patent
Utility
US 5,859,916 · App. 08/680,578
Two stage implantable microphone
Inventors:
Geoffrey R. Ball, Wyndham Robertson, III, Christopher A. Julian
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Jul 12, 1996
Inventors
Geoffrey R. Ball
Wyndham Robertson, III
Christopher A. Julian
Assignee (at issue)
Symphonix Devices, 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.