Granted Patent
Utility
US 4,337,424 · App. 06/195,862
Speed control for a rotary machine
Inventors:
Heinrich Cap, Johann von der Heide, Rolf Muller
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Oct 10, 1980
Inventors
Heinrich Cap
Johann von der Heide
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.