Granted Patent
Utility
US 5,234,550 · App. 07/728,148
Wall means having slots between adjacent bars for withdrawing liquid from particle material
Inventors:
Rolf Ekholm, Ulf Jansson
Patented Case
View Patent ↗
Granted: Aug 10, 1993
Filed: Jul 10, 1991
Inventors
Rolf Ekholm
Ulf Jansson
Assignee (at issue)
Kamyr, 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.