Granted Patent
Utility
US 5,757,933 · App. 08/763,520
In-the-ear hearing aid with directional microphone system
Inventors:
David A. Preves, Timothy S. Peterson, Mark A. Bren
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Dec 11, 1996
Inventors
David A. Preves
Timothy S. Peterson
Mark A. Bren
Assignee (at issue)
Micro Ear Technology, 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.