Device for simultaneous modulation and amplification of low freq
Device for talking underwater
Diaphragm assembly for stethoscope chest piece
Diaphragm cover for a stethoscope
Diaphragm for a loudspeaker
Diaphragm for an electro-acoustic transducer
Diaphragm for attenuating harmonic response in an electroacousti
Diaphragm material for moving coil loudspeaker, may be laminated
Diffraction free arrangement
Direct/reflecting speaker system and triangular shaped enclosure
Direction and frequency independent column of electro-acoustic t
Directional hearing enhancement
Directional microphone
Directional microphone
Directional microphone with high frequency selective acoustic le
Dispensable, disposable cover for stethoscopes
Dispensable, disposable shield for stethoscopes
Dispensable, disposable shield for stethoscopes
Disposable cover for stethoscope head
Disposable diaphragm stethoscope