Granted Patent
Utility
US 4,672,301 · App. 06/848,058
Power controller circuit with automatic correction for phase lag between voltage and current
Inventors:
Raymond T. Westfall, John F. Kohls
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Apr 4, 1986
Inventors
Raymond T. Westfall
John F. Kohls
Assignee (at issue)
Industrial Power Controls, 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.