Connections for electric lines; Converters; Covers for electric outlets; Distribution boxes for electrical power; Electric control panels; Electric couplings; Electric switch plates; Electric transformers; Electric wires and cables; Electrical plugs and sockets; Flashlights for use in photography; Lens filters; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Swi...