Granted Patent
Utility
US 4,630,382 · App. 06/678,981
Discharge device for granules
Inventors:
Manfred Keiler, Uwe Bartsch, Hans-Heinrich Drosemeyer, Franz X. Reitsam
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Dec 6, 1984
Inventors
Manfred Keiler
Uwe Bartsch
Hans-Heinrich Drosemeyer
Franz X. Reitsam
Assignee (at issue)
Hoechst GmbH
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.