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Ralston Purina Co., a corporation, trading as Ry-Krisp Division of Ralston Purina Co. at Minneapolis, Minn., and George W. Hans, superintendent of the manufacturing plant of the corporation
Champion Animal Food Co., a corporation, trading as the Ser Baking Co., Minneapolis, Minn., and John F. Koch, vice president of the corporation, and Clarence R. Schultz, superintendent of the Minneapolis factory