Granted Patent
Utility
US 6,021,805 · App. 09/093,678
Backflow preventer assembly
Inventors:
Timothy P. Horne, Dale S. Tripp
Patented Case
View Patent ↗
Granted: Feb 8, 2000
Filed: Jun 9, 1998
Inventors
Timothy P. Horne
Dale S. Tripp
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.