Granted Patent
Utility
US 5,340,213 · App. 08/175,726
Agitation system
Inventor:
Robert M. Rumph
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Dec 30, 1993
Inventor
Robert M. Rumph
Assignee (at issue)
Sumter Transport
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.