Granted Patent
Utility
US 4,896,231 · App. 07/220,509
Backbone gasket for disc drives
Inventor:
Robert F. Hoppe
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Jul 18, 1988
Inventor
Robert F. Hoppe
Assignee (at issue)
Seagate Technology LLC
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.