Granted Patent
Utility
US 4,746,019 · App. 07/040,255
End fill microwavable and/or ovenable container
Inventor:
Donald R. Prater
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Apr 20, 1987
Inventor
Donald R. Prater
Assignee (at issue)
Ridgway Packaging 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.