Granted Patent
Utility
US 4,831,581 · App. 07/017,645
Central processor unit for digital data processing system including cache management mechanism
Inventor:
Paul I. Rubinfeld
Patented Case
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Granted: May 16, 1989
Filed: Feb 24, 1987
Inventor
Paul I. Rubinfeld
Assignee (at issue)
Digital Equipment Corporation
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.