Granted Patent
Utility
US 4,494,644 · App. 06/455,374
Conveyor system
Inventor:
Joseph Paul Rizzo
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Jan 3, 1983
Inventor
Joseph Paul Rizzo
Assignee (at issue)
Scott Paper Limited
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.