Granted Patent
Utility
US 4,842,416 · App. 07/029,087
Agitating and kneading tool
Inventors:
Albrecht Kullen, Manfred Klawuhn, Sigrun Hickel, Wolfgang Franke
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: Mar 23, 1987
Inventors
Albrecht Kullen
Manfred Klawuhn
Sigrun Hickel
Wolfgang Franke
Assignee (at issue)
The Braun Corporation
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.