Granted Patent
Utility
US 5,791,120 · App. 08/867,555
Tray sealing platen and seal apparatus
Inventor:
Perry R. De Young
Patented Case
View Patent ↗
Granted: Aug 11, 1998
Filed: Jun 2, 1997
Inventor
Perry R. De Young
Assignee (at issue)
Oliver Products Company
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.