Granted Patent
Utility
US 4,807,121 · App. 07/205,533
Peripheral interface system
Inventor:
Robert J. Halford
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Jun 10, 1988
Inventor
Robert J. Halford
Assignee (at issue)
Cray Research, 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.