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Releasable, resettable latch mechanism
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Windmill apparatuses and methods of mounting blades to enhance their performance
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Mounting fire damper in wall
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Ducted wind turbine
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Wind energy conversion system
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Windmill; system for converting wind energy into stored power as compressed air; details of blade configuration
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Airfoils for wind energy conversion systems
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Counterpressure garment
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Elastic counterpressure garment
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Foam counterpressure garment
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Heat actuated link
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Thermally activated automatic damper and damper operator
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Bi-metal operator for smoke, fire and air control damper
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Aerodynamic shape with improved lift characteristics
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Damper operator for use with air, smoke and fire dampers
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Latch for a butterfly damper
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Thermally activated, automatic damper and damper operator
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Single blade damper for fire, smoke and air control
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