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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
a device in which pressurized air is blown thru a tube that looks like a push broom , but small air jet`s are used instead of bristles it also has attatchments for cleaning underneath , behind , on top of ,and ect , equipt vehicals , wood working tools and ectthe tool has a thumb, control valve at the top end of the tube i have applied for a provisional pat on the device (i had temporarily called it an " air broom "