72306160
Aug 28, 1968
Apr 14, 1970
HEAT TRANSFER UNIT HAVING PASSAGES FOR CIRCULATING HEATING OR COOLING FLUIDS AND INCORPORATED AS AN INTEGRAL PART OF A CONTAINER OR AS A SEPARATE PANEL PLACED IN A CONTAINER OR ADJACENT TO PRODUCTS TO BE HEATED OR COOLED; USED PRIMARILY FOR HEATING OR COOLING MILK PRODUCTS, FOODS AND CHEMICALS
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