Granted Patent
Utility
US 4,840,269 · App. 07/174,009
Apron type conveyor
Inventor:
William B. Anderson
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Mar 28, 1988
Inventor
William B. Anderson
Assignee (at issue)
REXNORD GMBH
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.