Granted Patent
Utility
US 4,252,268 · App. 06/069,528
Lid for ovenable trays and resulting combined container
Inventor:
James P. Haire
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Aug 24, 1979
Inventor
James P. Haire
Assignee (at issue)
Maryland Cup Corporation
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.