Granted Patent
Utility
US 5,290,141 · App. 08/092,958
Continuous down stacker apparatus
Inventor:
Michael R. Grinager
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Jul 19, 1993
Inventor
Michael R. Grinager
Assignee (at issue)
Brenton Engineering
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.