Granted Patent
Utility
US 4,626,751 · App. 06/748,010
Direct-current motor without commutator
Inventor:
Benno Doemen
Patented Case
View Patent ↗
Granted: Dec 2, 1986
Filed: Jun 24, 1985
Inventor
Benno Doemen
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.