4. Ventilation
  5. Having inlet airway
  6. Including specific air distributor

Bart Petterson

Inventor

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Ceiling vent with movable vane

Ventilation – Having inlet airway – Including specific air distributor
Patent

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Double duct changeover HVAC system

Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability
Reexamination Certificate

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Ductwork for delivery of low temperature air

Pipe joints or couplings – With casing – lining or protector – Insulated
Patent

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Profile ID: LFUS-PAI-P-49647

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