Granted Patent
Utility
US 4,494,058 · App. 06/451,669
Motor control for data disc rotating systems
Inventor:
Eugenio Berti
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: Dec 21, 1982
Inventor
Eugenio Berti
Assignee (at issue)
Burroughs, 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.