Granted Patent
Utility
US 5,720,142 · App. 08/580,837
Foam-filled door and method of manufacture
Inventor:
Timothy Morrison
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Dec 29, 1995
Inventor
Timothy Morrison
Assignee (at issue)
Wayne-Dalton Corp.
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.