Granted Patent
Utility
US 4,187,880 · App. 05/920,369
Single-handle mixing valve
Inventors:
Jurgen Humpert, Hans-Joachim Eckel, Rolf Behrenberg
Patented Case
View Patent ↗
Granted: Feb 12, 1980
Filed: Jun 29, 1978
Inventors
Jurgen Humpert
Hans-Joachim Eckel
Rolf Behrenberg
Assignee (at issue)
ITT Industries
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.