Granted Patent
Utility
US 6,204,623 · App. 09/213,689
Heater, humidifier or fan including a circuit for controlling the output thereof
Inventors:
William Levy, Robert Sherwood, John C. Polonchak
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Dec 17, 1998
Inventors
William Levy
Robert Sherwood
John C. Polonchak
Assignee (at issue)
The Holmes Group, 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.