Granted Patent
Utility
US 5,270,502 · App. 07/122,934
Package assembly and method for storing and microwave heating of food
Inventors:
Richard K. Brown, Oscar E. Seiferth
Patented Case
View Patent ↗
Granted: Dec 14, 1993
Filed: Nov 19, 1987
Inventors
Richard K. Brown
Oscar E. Seiferth
Assignee (at issue)
James River-Norwalk
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.