Granted Patent
Utility
US 4,821,269 · App. 06/922,367
Diagnostic system for a digital signal processor
Inventors:
Richard A. Jackson, David E. Lake, Jr., James E. Blecksmith, Ronnie D. Barnett, John Abt
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Oct 23, 1986
Inventors
Richard A. Jackson
David E. Lake, Jr.
James E. Blecksmith
Ronnie D. Barnett
John Abt
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.