Granted Patent
Utility
US 4,833,667 · App. 07/133,947
Spindle motor assembly for low acoustic noise environments
Inventors:
Joseph T. Castagna, Joseph C. Cardona
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Dec 17, 1987
Inventors
Joseph T. Castagna
Joseph C. Cardona
Assignee (at issue)
Priam 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.