Granted Patent
Utility
US 4,501,983 · App. 06/249,339
Electric machine
Inventor:
Fritz Schmider
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Mar 31, 1981
Inventor
Fritz Schmider
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.