Granted Patent
Utility
US 4,440,293 · App. 06/431,157
Sling belt bulk material conveyor
Inventors:
Kenneth Allan, Thomas J. Worringer, Robert T. Baugh
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Sep 30, 1982
Inventors
Kenneth Allan
Thomas J. Worringer
Robert T. Baugh
Assignee (at issue)
Allis-Chalmers Corporation
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.