Granted Patent
Utility
US 4,489,356 · App. 06/391,782
Enclosed disk drive with improved air filtration system
Inventor:
Paul L. Farmer
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Jun 24, 1982
Inventor
Paul L. Farmer
Assignee (at issue)
Atasi 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.