Granted Patent
Utility
US 5,585,120 · App. 08/350,264
Extriuded metal collapsing boards with replaceable wear plates
Inventor:
Earl T. Pottorff
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: Dec 5, 1994
Inventor
Earl T. Pottorff
Assignee (at issue)
Pearl Technologies, 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.