Granted Patent
Utility
US 4,358,725 · App. 06/189,911
Stepper motor control circuit
Inventor:
Roger C. Brendemuehl
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Sep 23, 1980
Inventor
Roger C. Brendemuehl
Assignee (at issue)
Beloit Corporation
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.