Granted Patent
Utility
US 4,333,356 · App. 06/140,536
Mixing apparatus
Inventors:
Hermann Bartels, Hans-Christian Mez, Walter Huber, Hans-Peter Stolz
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Apr 15, 1980
Inventors
Hermann Bartels
Hans-Christian Mez
Walter Huber
Hans-Peter Stolz
Assignee (at issue)
Ciba-Geigy
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.