Granted Patent
Utility
US 6,003,536 · App. 08/736,190
Automatic water shut-off valve
Inventors:
Paul Polverari, Stephen M. Wolfhope
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Oct 24, 1996
Inventors
Paul Polverari
Stephen M. Wolfhope
Assignee (at issue)
Watts Investment Company
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.