Granted Patent
Utility
US 6,505,838 · App. 09/847,784
Pressure regulator utilizing pliable piston seal
Inventor:
John G. Cavaliere
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: May 2, 2001
Inventor
John G. Cavaliere
Assignee (at issue)
Tactair Fluid Controls
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.