Granted Patent
Utility
US 4,742,474 · App. 06/720,662
Variable access frame buffer memory
Inventor:
David L. Knierim
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Apr 5, 1985
Inventor
David L. Knierim
Assignee (at issue)
Tektronix, 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.