Granted Patent
Utility
US 5,971,007 · App. 09/044,360
Piston valve
Inventors:
Robert Harcourt, Tom Dawson
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Mar 19, 1998
Inventors
Robert Harcourt
Tom Dawson
Assignee (at issue)
SNAP-TITE TECHNOLOGIES, 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.