Granted Patent
Utility
US 6,233,397 · App. 09/022,799
Dual power rated electric heater
Inventor:
Yigal Offir
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Feb 13, 1998
Inventor
Yigal Offir
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.