Granted Patent
Utility
US 5,652,470 · App. 08/460,128
Brushless DC drive motor with external rotor for use in disc drives and like devices
Inventors:
Johann von der Heide, Rolf Muller, Alfred Merkle
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Jun 2, 1995
Inventors
Johann von der Heide
Rolf Muller
Alfred Merkle
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.