VOLT

Roofing of metal, incorporating photovoltaic cells; roof tiles of metal; tiles of metal; building materials of metal for roofs; roofing materials of metal in the form of tiles

Solar cells for electricity generation; solar energy collectors for electricity generation; solar energy operating apparatus; photovoltaic cells; electricity generating solar cells and panels

Roofing, not of metal, incorporating photovoltaic cells; roofing tiles, not of metal; tiles, not of metal; non-metallic building materials for roofs; non-metallic materials for roofs