4. Acoustics
  5. Miscellaneous

Duane C. McCormick

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Discharge diffuser for screw compressor

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone
Reexamination Certificate

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Intergrated active noise control system for air handling unit

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – From appliance
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Multistage turbulence shield for microphones

Acoustics – Miscellaneous
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Non-linear reduced-phase filters for active noise control

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Counterwave generation control path
Patent

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Passively driven acoustic jet controlling boundary layers

Rotary kinetic fluid motors or pumps – With sound or vibratory wave absorbing or preventing means...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-197334

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