Granted Patent
Utility
US 4,700,941 · App. 06/866,162
Corrugated sheet unstacking and feeding apparatus
Inventor:
David Shill
Patented Case
View Patent ↗
Granted: Oct 20, 1987
Filed: May 22, 1986
Inventor
David Shill
Assignee (at issue)
Thermoguard Equipment, 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.