4. Electrical audio signal processing systems and devices
  5. Acoustical noise or sound cancellation
  6. Within duct

Mark A. Daniels

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Absorptive/reactive muffler for variable speed compressors

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

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Active noise control for plug fan installations

Ventilation – Having inlet airway – With air pump
Reexamination Certificate

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Compressor discharge chamber with baffle plate

Rotary expansible chamber devices – Interengaging rotating members – Three or more
Reexamination Certificate

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Fan scroll

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having tangential inlet or outlet
Patent

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Flow distributor for air conditioning unit

Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Patent

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Profile ID: LFUS-PAI-P-918435

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