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

Harry T. O'Hagin

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Primary roof vent

Building units and construction elements – Miscellaneous
Design Patent

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Roof ventilation system and method

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

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Profile ID: LFUS-PAI-P-2551872

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