Granted Patent
Utility
US 4,292,572 · App. 06/060,761
Method and apparatus for regulating electric motor armature currents
Inventor:
Joel G. Ivy
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Jul 26, 1979
Inventor
Joel G. Ivy
Assignee (at issue)
Dresser Industries, 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.