Granted Patent
Utility
US 6,640,802 · App. 10/014,491
Device for manual actuation of a gas distribution valve connected to a burner
Inventors:
Maurizio Grando, Michele Bortoliero
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Dec 14, 2001
Inventors
Maurizio Grando
Michele Bortoliero
Assignee (at issue)
OP Controls SpA
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.