Granted Patent
Utility
US 6,354,172 · App. 09/494,899
Mechanical timer mechanism for valve control
Inventors:
Peter Piacenza, Amy Cotton, Stephen J. Gaynes, John H. Kargenian
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Jan 31, 2000
Inventors
Peter Piacenza
Amy Cotton
Stephen J. Gaynes
John H. Kargenian
Assignee (at issue)
Aquion, 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.