Granted Patent
Utility
US 4,156,170 · App. 05/837,988
Stepper motor control
Inventor:
Gerald R. Strunc
Patented Case
View Patent ↗
Granted: May 22, 1979
Filed: Sep 29, 1977
Inventor
Gerald R. Strunc
Assignee (at issue)
Pako 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.