Granted Patent
Utility
US 4,639,798 · App. 06/806,082
Disk drive having two interactive electromechanical control subsystems
Inventors:
Joel N. Harrison, Vincent Anthony Condito, Randolph H. Graham, Brian Nixon, Richard C. Simonsen
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Dec 6, 1985
Inventors
Joel N. Harrison
Vincent Anthony Condito
Randolph H. Graham
Brian Nixon
Richard C. Simonsen
Assignee (at issue)
Quantum 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.