Granted Patent
Utility
US 4,885,792 · App. 07/263,148
Audio mixer architecture using virtual gain control and switching
Inventors:
Donald R. Christensen, Robert Bateman, Thomas A. Grancey
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Oct 27, 1988
Inventors
Donald R. Christensen
Robert Bateman
Thomas A. Grancey
Assignee (at issue)
GRASS VALLEY LIMITED
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.