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Loudspeaker with rigid foamed back-cavity

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Loudspeaker with wall reflex absorber

Acoustics – Plural diaphragm sound sources – With sound-asborbing means
Patent

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Loudspeakers

Acoustics – Diaphragm and enclosure
Reexamination Certificate

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Loudspeakers in architectural form

Acoustics – Sound-modifying means – Housing or enclosure
Patent

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Louver flow muffler

Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent

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Louver structure with movable slats for a loudspeaker box

Acoustics – Diaphragm and enclosure – Reflector baffle
Patent

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Low back pressure exhaust silencer for diesel locomotives

Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent

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Low backpressure straight-through reactive and dissipative muffl

Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent

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Low cost muffler

Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate

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Low cost replaceable type sound dampening unit for vacuum cleani

Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent

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Low cost vehicle electrical and electronic components and...

Acoustics – Diaphragm and enclosure
Reexamination Certificate

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Low distortion audio speaker cabinet

Acoustics – Diaphragm and enclosure – Reflex baffle
Patent

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Low distortion loudspeaker cone suspension

Acoustics – Diaphragm – Mounting or suspension means
Reexamination Certificate

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Low distortion pyramidal dispersion speaker

Acoustics – Sound-modifying means – Intensifying horn
Patent

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Low energy source for seismic operation

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Low frequency acoustic attenuator

Acoustics – Geophysical or subsurface exploration – Well logging
Reexamination Certificate

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Low frequency acoustic attenuator for use in downhole...

Acoustics – Geophysical or subsurface exploration – Seismic source and detector
Reexamination Certificate

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Low frequency electro-acoustic transducer with interconnected di

Acoustics – Plural diaphragm sound sources
Patent

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Low frequency equaphase surround loudspeaker

Acoustics – Plural diaphragm sound sources – With sound-asborbing means
Patent

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Low frequency flextensional acoustic source for underwater use

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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