Granted Patent
Utility
US 4,492,992 · App. 06/391,804
High storage density disc data store employing controlled-angular-velocity rotary medium
Inventors:
John O. Rooney, Ian Freeman
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Jun 24, 1982
Inventors
John O. Rooney
Ian Freeman
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.