Granted Patent
Utility
US 4,494,028 · App. 06/428,828
Integral coaxial commutation and rotor magnets and apparatus and method for making same
Inventor:
Fred A. Brown
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: Sep 30, 1982
Inventor
Fred A. Brown
Assignee (at issue)
Rotron, 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.