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Optical sash sensing system for fume hoods

Ventilation – Workstation ventilator – Covered workbench chamber
Reexamination Certificate

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Oscillating baffle for airflow redirection and heat transfer enh

Ventilation – Having inlet airway – Including specific air distributor
Patent

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Oscillating baffle for airflow redirection and heat transfer...

Ventilation – Having inlet airway – Including specific air distributor
Reexamination Certificate

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Oscillating drive for air flow discharge

Ventilation – Having inlet airway – Including specific air distributor
Reexamination Certificate

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Oscillation fixed grille outlet

Ventilation – Vehicle – Having inlet airway
Patent

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Outdoor fan system

Ventilation – Having inlet airway – With air pump
Reexamination Certificate

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Outdoor fan system

Ventilation – Having inlet airway – With air pump
Reexamination Certificate

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Outflow nozzle for a vehicle

Ventilation – Vehicle – Having inlet airway
Patent

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Outlet device for the interior of a vehicle

Ventilation – Vehicle – Aircraft
Reexamination Certificate

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Outlet nozzle for ventilation or air-conditioning systems

Ventilation – Vehicle – Having inlet airway
Patent

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Outside air intake structure

Ventilation – Vehicle – Having inlet airway
Reexamination Certificate

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Outside air introduction grill for inducting natural...

Ventilation – Having inlet airway – Including specific cover or shield for exterior vent opening
Reexamination Certificate

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Oxygen enrichment of indoor human environments

Ventilation – Having inlet airway – Including automatic control means
Reexamination Certificate

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