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Bag filter
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Method for installation of composite hose filters
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Device for cleaning dusty air
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Arrangement for rolling-out wires from aircraft
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Arrangement for unreeling wires with the aid of aircraft
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Device for uncoiling wires with aid of flying vehicle
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Device for uncoiling wires with aid of flying vehicle
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Device for installing overhead power transmission line wire
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Method of installation of power transmission line wires
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Device for wire expanding by means of flying apparatus
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Device for mounting sections of long structures
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