Granted Patent
Utility
US 5,651,074 · App. 08/438,826
Noise canceling gradient microphone assembly
Inventors:
John Charles Baumhauer, Jr., Larry A. Marcus
Patented Case
View Patent ↗
Granted: Jul 22, 1997
Filed: May 11, 1995
Inventors
John Charles Baumhauer, Jr.
Larry A. Marcus
Assignee (at issue)
LUCENT TECHNOLOGIES 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.