RECHARGEABLE THERMAL BATTERY

Concrete building materials, namely, insulated precast concrete walls; Concrete panels; Concrete walls; Wall panels not of metal; Building materials, namely, pre-cast concrete wall forms; Construction materials, namely, energy conserving precast concrete slabs; Construction materials, namely, concrete slabs designed to increase energy efficiency and energy conservation; Construction materials, namely, energy conserving concrete slabs; Slabs of concrete designed to conserve energy