Granted Patent
Utility
US 4,483,153 · App. 06/484,394
Wide island air defrost refrigerated display case having a defrost-only center passage
Inventor:
George E. Wallace
Patented Case
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Granted: Nov 20, 1984
Filed: Apr 13, 1983
Inventor
George E. Wallace
Assignee (at issue)
Emhart Industries, Inc.
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.