Granted Patent
Utility
US 5,979,484 · App. 09/066,759
Safety and regulation valve unit for a gas installation particularly a heating installation
Inventors:
Maurizio Grando, Michele Bortoliero, Vanni Gallocchio
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Apr 28, 1998
Inventors
Maurizio Grando
Michele Bortoliero
Vanni Gallocchio
Assignee (at issue)
OP Controls S.r.l.
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.