Granted Patent
Utility
US 4,699,170 · App. 07/022,608
Cartridge for faucet valve
Inventors:
Peter W. Diephuis, Arthur D. Thompson
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Mar 4, 1987
Inventors
Peter W. Diephuis
Arthur D. Thompson
Assignee (at issue)
EMCO, 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.