Granted Patent
Utility
US 4,854,545 · App. 07/211,998
Faucet valve with diagonal sealing ring
Inventor:
John J. Pezzarossi
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Jun 27, 1988
Inventor
John J. Pezzarossi
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.