Amplifiers; Breathing apparatus for underwater swimming; Camera lens adapters; Cash registers, calculating machines, data-processing equipment and computers; Electronic devices, namely, handhelds for exchanging data in energy meters or submeters; Electronically-operated door latches; Goggles for scuba diving; Hand-operated laboratory tools for manipulating laboratory samples; Lightning conductors; Loudspeakers, headphones, microphones and CD players; Telescopes; Thermo-hygrometers; Visors for...