Granted Patent
Utility
US 4,370,580 · App. 06/158,982
Reluctance motor
Inventor:
Martin Burgbacher
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Jun 12, 1980
Inventor
Martin Burgbacher
Assignee (at issue)
Papst Motoren GmbH und 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.