Granted Patent
Utility
US 4,678,565 · App. 06/819,799
Purified water storage system with accumulator tank and diaphragm responsive valves
Inventor:
William W. Norton
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Jan 17, 1986
Inventor
William W. Norton
Assignee (at issue)
CULLIGAN INTERNATIONAL COMPANY
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.