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Gasket for damper assembly
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Enclosure with sliding and pivoting cover
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Centrifugal fan assembly including cooling vanes and a cooling plate
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Metal detector
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Balancing circuit for a metal detector
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Grille assembly and related method
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Automated system for pricing and ordering custom manufactured parts
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Safety lock
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Ventilator scroll arrangement
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Auxiliary frame for ceiling mounted air diffusers and the like
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Opposed blade balanced damper
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Humidifier controller having automatic over-current correcting means
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