Granted Patent
Utility
US 5,864,443 · App. 08/027,374
Disk storage device having a detachable coupling ring in the hub
Inventors:
Dieter Elsaesser, Johann von der Heide
Patented Case
View Patent ↗
Granted: Jan 26, 1999
Filed: Feb 20, 1998
Inventors
Dieter Elsaesser
Johann von der Heide
Assignee (at issue)
Papst Licensing GmbH
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.