Abstract: A panel of a structure includes an outer layer and an inner layer that is positioned closer to an interior surface of the structure than the outer layer. An intermediate layer is positioned between the outer layer and the inner layer, and a mask layer is positioned between the outer layer and the intermediate layer. The mask layer includes an outer portion and an inner portion, where the outer portion is positioned between the outer layer and the intermediate layer, and the inner portion is positioned between the outer portion and the intermediate layer. The outer portion and the inner portion include different visual attributes.

Abstract: A panel includes an outer layer and an inner layer. A mask layer is positioned between the outer layer and the inner layer. An active layer is positioned between the mask layer and the inner layer and adjacent to an outer edge of the panel. The active layer extends from the outer edge of the panel toward a central portion of the panel and includes an independently controllable active element configured to limit viewing of the mask layer.

Abstract: A universal mounting bracket is provided for one or both ends of the head rail of a venetian blind or other such article, for example, a curtain rod, fireplace screen, drapery rod, or the like. The mounting bracket is operative for securing the aforementioned articles either within or across the opening of a window frame by compression fit without the necessity of nails and screws or other such items which would permanently injure the window casing. The mounting bracket may be easily installed or removed in order to accommodate simple installation of an article, its realignment or removal for repair or replacement and the like.

Abstract: A metal/air battery having plural series-connected cells, including a tank for holding a body of liquid electrolyte, and an electrically nonconductive frame carrying a plurality of air cathodes facing a common air chamber and a like plurality of anodes respectively juxtaposed to the cathodes outside the air chamber, the frame being removably insertable in the tank and engaging the tank wall, when inserted, so as to divide the tank into a plurality of separate and substantially electrically isolated electrolyte-holding zones each containing one anode-cathode pair. The anodes may have vertical slots to facilitate passage of electrochemical reaction products from the anode-cathode gaps. The battery may be incorporated in a lamp having a light bulb in a cartridge slidably held between resilient arms with electrical contacts arranged as a switch to close an otherwise-open circuit including the battery and the light bulb when the cartridge is moved to the extremity of the arms.