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Narrow angle cylindrical wave full range loudspeaker system

Acoustics – Plural diaphragm sound sources – Three diaphragms
Patent

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Narrow directional microphone

Acoustics – Diaphragm – Microphone type
Patent

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Narrow width stamp formed muffler

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

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Near-surface seismic investigation source apparatus

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Nestable sound absorbing foam with reduced area of attachment

Acoustics – Sound-modifying means – Space absorbers
Patent

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Nesting speaker assembly

Acoustics – Sound-modifying means – Housing or enclosure
Reexamination Certificate

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No-flash seismic cord

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Noise abatement device for a pneumatic tool

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

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Noise abatement filter for fuel tanks

Acoustics – Sound-modifying means – Housing or enclosure
Reexamination Certificate

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Noise abatement module

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

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Noise abatement muffler

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

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Noise abatement techniques and systems

Acoustics – Sound-modifying means – Methods
Patent

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Noise abatement wall

Acoustics – Sound-modifying means – Sound absorbing fence or screen
Reexamination Certificate

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Noise absorber for air or gas flows

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

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Noise absorbing device

Acoustics – Sound-modifying means – Sound absorbing panels
Patent

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Noise absorbing device and device for taking air into engine...

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

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Noise absorbing housing for a blender

Acoustics – Sound-modifying means – Housing or enclosure
Patent

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Noise absorbing structure of instrument panel

Acoustics – Sound-modifying means – Methods
Reexamination Certificate

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Noise absorption apparatus

Acoustics – Sound-modifying means – Housing or enclosure
Patent

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Noise absorption blade mounting structure for working vehicles

Acoustics – Sound-modifying means – Housing or enclosure
Reexamination Certificate

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