Acoustic couplers; Acoustic coupling devices; Acoustic membranes; Cabinets for loudspeakers; Computer mouse; Computer mouse in the nature of a trackpad; Computer mouse, namely, touchpads; Computer mouse, namely, trackballs; Computer peripheral devices; Data processing equipment, namely, couplers; Electroacoustic transducers; Electronic pens; Electronic sound mixing, processing and synthesizing apparatus; Headphones; Headsets for cellular or mobile phones; Headsets for mobile telephones; Heads...