Granted Patent
Utility
US 4,827,538 · App. 07/011,167
Mixing fixture for flexible-pipe spray head
Inventors:
Bruno Heimann, Rainer Luke, Heinz-Dieter Eichholz
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Feb 5, 1987
Inventors
Bruno Heimann
Rainer Luke
Heinz-Dieter Eichholz
Assignee (at issue)
Friedrich Grohe Armaturenfabrik GmbH & Co.
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.