4. Acoustics
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William P. Patrick

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Active acoustic wall

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Within cabin or compartment of vehicle
Patent

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Active noise control using phased-array active resonators

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Within duct
Patent

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Anechoic visco-thermal liner

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

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Compressor muffler

Pumps – With muffler acting on pump fluid
Reexamination Certificate

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Flashback resistant burner

Combustion – Mixer and flame holder
Patent

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Profile ID: LFUS-PAI-P-197335

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