Granted Patent
Utility
US 4,429,263 · App. 06/220,181
Low magnetic leakage flux brushless pulse controlled D-C motor
Inventor:
Rolf Muller
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Dec 23, 1980
Inventor
Rolf Muller
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.