4. Ventilation
  5. Having inlet airway
  6. With adjustable valve

Eugene J. Heil

Inventor

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Integral pivot damper blade

Ventilation – Having inlet airway – With adjustable valve
Patent

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Latch assembly for damper

Ventilation – Fire damper
Reexamination Certificate

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Quick release latch mechanism

Closure fasteners – Bolts – Hooked end
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1025930

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