Granted Patent
Utility
US 4,787,504 · App. 06/916,071
Adjustable radius conveyor roll
Inventor:
Stephen J. Schultz
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Oct 6, 1986
Inventor
Stephen J. Schultz
Assignee (at issue)
PPG 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.