Granted Patent
Utility
US 5,748,757 · App. 08/579,528
Collapsible image derived differential microphone
Inventors:
Robert A. Kubli, James E. West
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Dec 27, 1995
Inventors
Robert A. Kubli
James E. West
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.