Granted Patent
Utility
US 5,967,729 · App. 08/997,128
Bottom discharge, rotating ring drive silo unloader
Inventor:
Gordon F. Foes
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Dec 23, 1997
Inventor
Gordon F. Foes
Assignee (at issue)
J-Star Industries, 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.