Granted Patent
Utility
US 4,805,090 · App. 06/780,864
Peripheral-controller for multiple disk drive modules having different protocols and operating conditions
Inventor:
Ronald S. Coogan
Patented Case
View Patent ↗
Granted: Feb 14, 1989
Filed: Sep 27, 1985
Inventor
Ronald S. Coogan
Assignee (at issue)
Unisys 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.