Granted Patent
Utility
US 4,547,692 · App. 06/540,199
Positional control system employing induction motor and electronic braking thereof
Inventor:
Carl P. Spaulding
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Oct 7, 1983
Inventor
Carl P. Spaulding
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.