Granted Patent
Utility
US 4,284,943 · App. 06/011,855
Apparatus and method for controlling the speed of an induction motor in a closed-loop system
Inventor:
Denton C. Rowe
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Feb 13, 1979
Inventor
Denton C. Rowe
Assignee (at issue)
Electric Machinery Mfg. Company
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.