Granted Patent
Utility
US 4,606,372 · App. 06/738,829
Faucet valve bonnet locking means
Inventor:
Dennis J. Hayman
Patented Case
View Patent ↗
Granted: Aug 19, 1986
Filed: May 29, 1985
Inventor
Dennis J. Hayman
Assignee (at issue)
United States Brass Corporation
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.