EAST, District Judge:
Norris Industries, Inc. (Norris) instituted this action seeking declaratory judgment that United States Patents 3,081,392 and 2,831,952, issued to Elmer Warner and assigned to The Tappan Company (Tappan), were invalid and not infringed. Tappan counterclaimed for infringement of claims 1-7, 11, and 12 of 3,081,392 and claims 4, 5, and 10-12 of 2,831,952. Patent 3,081,392 embodies Warner's alleged invention of a microwave oven with an electrical...
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