Granted Patent
Utility
US 6,229,899 · App. 09/159,443
Method and device for developing a virtual speaker distant from the sound source
Inventors:
Elwood G. Norris, James J. Croft, III
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Sep 24, 1998
Inventors
Elwood G. Norris
James J. Croft, III
Assignee (at issue)
American Technology Corporation
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.