Granted Patent
Utility
US 5,013,957 · App. 07/382,628
Motor with toothed disk to secure the stator core
Inventor:
Gunter Wrobel
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Aug 9, 1989
Inventor
Gunter Wrobel
Assignee (at issue)
Papst Motoren GmbH & Co KG
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.