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Distance piece
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Patent number 8,276,339
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Issue date Oct 2, 2012
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B.T. Innovation GmbH
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Felix Von Limburg
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B28 - WORKING CEMENT, CLAY, OR STONE
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Formwork system
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Patent number 7,887,022
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Issue date Feb 15, 2011
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B.T. Innovation GmbH
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Felix Von Limburg
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B28 - WORKING CEMENT, CLAY, OR STONE
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Holding device
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Patent number 7,419,131
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Issue date Sep 2, 2008
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B.T. Innovation GmbH
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Felix Von Limburg
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B28 - WORKING CEMENT, CLAY, OR STONE
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Positioning aid
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Patent number 7,175,153
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Issue date Feb 13, 2007
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BT Baubedarf Magdeburg GmbH
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Bernd Schreyer
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B28 - WORKING CEMENT, CLAY, OR STONE