Granted Patent
Utility
US 5,875,935 · App. 08/948,054
Apparatus for assisting the discharge of slow-flowing bulk goods from containers
Inventors:
Martin Koch, Günter Untch
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Oct 9, 1997
Inventors
Martin Koch
Günter Untch
Assignee (at issue)
GEI Consultants, Inc.
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.