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BOX-SHAPED BUILDING BOARD MADE OF EXTRUDED PLASTIC
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Tangled thread mats for water works - are spun through different sized nozzles with threads uniformly bonded at intersections
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Extruded transparent plastics window effect box panel - has end protrusion and groove section with filling for sealed interlocking
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CAVE BLOCK STONE
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AU2471177A
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Corrugated pipe
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Piercer layout for holes in undulating drainage pipes - has cam rails ensuring positive retraction of punching tools
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Corrugated pipes coupled by double sleeve - of inner corrugated half rounds and outer smooth tube
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Corrugated pipes are perforated in troughs - by synchronised punches which suit helical or annular corrugations
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DK142167B
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Apparatus for generating holes in the wave valleys in plastic corrugated tubes, in particular for drainage purposes.
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DK148621B
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Method and apparatus for machinery manufacturing the brick wrapped with a corned material, principly sand
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NL167623B
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Improvement in a method for automatic manufacturing bricks sprayed with granular material.
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NL161702B
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Method and apparatus for automatically manufacturing bricks sprayed with granular material
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Draen pipe
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Device for the production of window lintels or similar beam-shaped structural bodies
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Pallet for the manufacture of window lintels
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DE1586220B1
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Package of circular cylinders formed by stacking and tying, in particular a Draenrohr package
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DE1265064B
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Drainage with drainage pipes laid on a flexible, elastic band as a floor covering for the drainage bed
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DE1241768B
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Drainage with drainage pipes laid on a flexible, elastic band as a floor covering for the drainage bed
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