Granted Patent
Utility
US 5,664,047 · App. 08/520,366
System for controlling the speed of a motor driven by an unregulated voltage
Inventor:
Kirk D. Hanson
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: Aug 28, 1995
Inventor
Kirk D. Hanson
Assignee (at issue)
IO-Mega Holding Corporation
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.