Back-fire resistant lock seam for muffler shells
Background sound system and apparatus for masking speech
Baffle
Baffle equipped with flap assembly
Baffle for sound suppression
Baffle plate of discharge muffler for hermetic reciprocating...
Balanced cantilever spring bracket
Balloon assembly
Band earplug adapted to prevent soiling
Banded hearing protector
Bandless hearing protector and method
Base for a loudspeaker enclosure
Base for holding the tweeter of a speaker
Base plate and earth coupling assembly for shear-wave transducer
Base plate locator for seismic source
Baseball bat having the functions of resonators and microphones
Baseplate assembly for seismic wave generator
Bass amplifying system for radios
Bass reflex box of an automobile radio-sound system
Bass reflex type loudspeaker apparatus, loudspeaker box and...