Hearing aids; Digital hearing aids; Electric hearing aids; Medical hearing instruments; Medical testing devices for measuring hearing loss in patients, namely, audiometers; Wireless transmitters and receivers for use with hearing aids

Musical accessories being mutes for musical wind instruments, namely, resonator devices for practicing correct placement of the air column applied to mouthpieces of brass instruments, without producing the musical sound of such instruments; Musical accessories being mutes for musical wind instruments, namely, warm-up and practice devices for mouthpieces of brass instruments that do not produce the musical sound of such instruments; all of the foregoing excluding percussion instruments