Granted Patent
Utility
US 6,474,492 · App. 09/790,747
Multiple hot zone igniters
Inventors:
Craig A. Willkens, Normand P. Arsenault, Sebastien Bardon
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Feb 22, 2001
Inventors
Craig A. Willkens
Normand P. Arsenault
Sebastien Bardon
Assignee (at issue)
SAINT-GOBAIN CERAMICS & PLASTICS, 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.