Granted Patent
Utility
US 5,346,973 · App. 07/927,626
Pourable liquid surfactant concentrate
Inventors:
Dieter Feustel, Uwe Held, Rainer Hoefer, Thomas Engels
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Oct 28, 1992
Inventors
Dieter Feustel
Uwe Held
Rainer Hoefer
Thomas Engels
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.