Granted Patent
Utility
US 5,506,908 · App. 08/268,462
Directional microphone system
Inventors:
John Charles Baumhauer, Jr., Jeffrey Phillip McAteer, Alan Dean Michel, Christopher Todd Welsh, Kevin D. Willis
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Jun 30, 1994
Inventors
John Charles Baumhauer, Jr.
Jeffrey Phillip McAteer
Alan Dean Michel
Christopher Todd Welsh
Kevin D. Willis
Assignee (at issue)
AT&T CORP.
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.