Earphones; Headphones; Microphones; Telescopes; Burglar alarms; Conversion lenses for cameras; Data processing apparatus; Divers' masks; Electric door bells; Electronic anti-theft system comprised of a bar code scanner that allows manufacturers to temporarily disable electronic goods during the manufacturing process and allows retailers to enable such goods upon receiving the purchase price for the goods; Protective films adapted for smartphones; Protective helmets; Protective face masks for ...