Granted Patent
Utility
US 4,511,835 · App. 06/452,560
Voltage-controlled, inverter-motor system
Inventor:
George H. Studtmann
Patented Case
View Patent ↗
Granted: Apr 16, 1985
Filed: Dec 23, 1982
Inventor
George H. Studtmann
Assignee (at issue)
BorgWarner Inc.
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.