Granted Patent
Utility
US 4,409,539 · App. 06/242,864
Self-excitation for an alternator of the low-carbon steel rotor type
Inventors:
Raymond E. Nordbrock, Kirk A. Sievers
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Mar 12, 1981
Inventors
Raymond E. Nordbrock
Kirk A. Sievers
Assignee (at issue)
Motorola, 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.