Granted Patent
Utility
US 5,172,862 · App. 07/633,483
Shower head
Inventors:
Bruno Heimann, Friedrich Wagner, Bernd Bischoff, Hans-Peter Strelow
Patented Case
View Patent ↗
Granted: Dec 22, 1992
Filed: Dec 27, 1990
Inventors
Bruno Heimann
Friedrich Wagner
Bernd Bischoff
Hans-Peter Strelow
Assignee (at issue)
Friedrich Grohe AG
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.