Granted Patent
Utility
US 4,764,828 · App. 07/031,306
Disc and hub centering device for use in magnetic disc drives
Inventor:
Lawrence W. Gollbach
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Mar 26, 1987
Inventor
Lawrence W. Gollbach
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.