Granted Patent
Utility
US 5,026,249 · App. 07/358,256
Apparatus for stacking corrugated sheet material
Inventor:
David Shill
Patented Case
View Patent ↗
Granted: Jun 25, 1991
Filed: May 26, 1989
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.