Granted Patent
Utility
US 4,574,706 · App. 06/650,818
Conveyor system with alternative carrier propulsion
Inventor:
Clarence A. Dehne
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Sep 13, 1984
Inventor
Clarence A. Dehne
Assignee (at issue)
JERVIS B. WEBB COMPANY
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.