Granted Patent
Utility
US 4,853,784 · App. 07/157,675
Video switcher with independent processing of selected video signals
Inventors:
John Abt, Ronnie D. Barnett, James E. Blecksmith, Kevin D. Windrem, Neil R. Olmstead, Richard A. Jackson, Peter D. Symes, Richard S. Bannister, Thomas A. Grancey, Richard A. Frasier
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Feb 19, 1988
Inventors
John Abt
Ronnie D. Barnett
James E. Blecksmith
Kevin D. Windrem
Neil R. Olmstead
Richard A. Jackson
Peter D. Symes
Richard S. Bannister
Thomas A. Grancey
Richard A. Frasier
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.