Granted Patent
Utility
US 4,647,803 · App. 06/753,801
Electric motor, particularly a brushless direct current motor
Inventors:
Johann von der Heide, Rolf Muller, Ernst-Moritz Korner
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Jul 8, 1985
Inventors
Johann von der Heide
Rolf Muller
Ernst-Moritz Korner
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.