Granted Patent
Utility
US 4,723,574 · App. 06/880,377
Sanitary water fitting
Inventors:
Konrad Bergmann, Hans W. Thullen
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Jun 30, 1986
Inventors
Konrad Bergmann
Hans W. Thullen
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.