4. Ventilation
  5. Having both inlet and outlet airways
  6. Natural ventilation including air passage through rooftop

William B. Daniels, II

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Building with improved vent arrangement

Ventilation – Having both inlet and outlet airways – Natural ventilation including air passage through rooftop
Reexamination Certificate

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Roof vent

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Design Patent

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Profile ID: LFUS-PAI-P-3069426

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