Holders for electric coils; retorts for use in high temperature chemical reactions
Electrical and Scientific ApparatusHeating elements; heat generators, namely, heating modules; air heaters, namely, electric space heaters; hot-air space heating Apparatus; hot-air space heating apparatus, namely, air heating cassettes; electric furnaces for industrial purposes, namely, flow heaters; heat diffusion collars and discs for use in furnaces in the nature of diffusion cassettes; component parts for furnaces, namely, furnace tubes, furnace rollers, and radiant tubes; component parts for heating applications, namely, electrical heating fixtures, trays, muffles, burner nozzles, furnace baskets, supports, and tube hangers; electric heating systems for commercial use comprised primarily of tubes, pipes, and manifolds
Environmental Control Apparatus