U.S. federal trademark · Serial No. 72001018 · Reg. No. 0635400
FOOD SERVING DISHES HAVING PROVISION FOR RETENTION OF TEMPERATURE CONSISTING IN A LOWER OR UNDER DISH OF HEAT INSULATING PLASTIC MATERIAL AND AN UPPER DISH FITTED INTO AND FOR THE MOST PART DISPOSED IN SPACED RELATION TO SAID UNDER DISH AND CONSTRUCTED OF CONDUCTIVE METAL
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