Granted Patent
Utility
US 4,393,523 · App. 06/363,695
Tub filling and shower valve
Inventor:
Werner Nolden
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Mar 30, 1982
Inventor
Werner Nolden
Assignee (at issue)
American Standard 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.