Granted Patent
Utility
US 4,982,064 · App. 07/529,775
Microwave double-bag food container
Inventors:
Richard R. Hartman, Bradley D. Berger, Kimberly J. DeHaan
Patented Case
View Patent ↗
Granted: Jan 1, 1991
Filed: May 31, 1990
Inventors
Richard R. Hartman
Bradley D. Berger
Kimberly J. DeHaan
Assignee (at issue)
JAMES RIVER CORPORATION OF VIRGINIA
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.