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Device for applying pulsed radial stresses to the wall of a well

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Device for attenuating noise in a tube for transporting gas

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

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Device for attenuating pulsation of fluids in piping systems

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

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Device for collecting the exhaust gas jet of an aircraft reactor

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

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Device for conducting away the exhaust gases from internal combu

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

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Device for conducting away the exhaust gases from internal combu

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

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Device for conducting away the exhaust gases from internal combu

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

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Device for controlling a propagation direction of noise

Acoustics – Sound-modifying means – Sound absorbing fence or screen
Patent

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Device for controlling the porosity of a helical, flexible,...

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

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Device for coupling a receiver system with the wall of a well

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Device for damping an oscillatory system

Acoustics – Sound-modifying means – Mechanical vibration attenuator
Patent

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Device for deadening sound in pipelines

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

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Device for dynamic excitation of panel loudspeakers

Acoustics – Diaphragm – Particular shape
Reexamination Certificate

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Device for electroacoostic diffusion, with diaphragms, spiders a

Acoustics – Diaphragm – Particular shape
Patent

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Device for emitting acoustic waves in a liquid medium

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Device for emitting acoustic waves in a liquid medium by implosi

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Device for emitting mechanical waves

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Device for enlarging the effective volume of a loudspeaker enclo

Acoustics – Diaphragm and enclosure – With sound-absorbing means
Patent

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Device for establishing noise in a motor vehicle

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

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Device for generating acoustic shear waves in the earth

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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