Granted Patent
Utility
US 4,568,991 · App. 06/447,816
Axial partitioning of disk pack
Inventors:
Herbert U. Ragle, Dean DeMoss
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: Dec 8, 1982
Inventors
Herbert U. Ragle
Dean DeMoss
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.