发明名称 A COVER FOR A CONCRETE CHUTE
摘要 <p>A cover (10, 20,30,40) for a concrete chute is disclosed comprising a receptacle having at its open end a flexible collar (12) mechanism including webbing (14, 35,47) adapted to be tightened about such a chute.</p>
申请公布号 WO2012107710(A1) 申请公布日期 2012.08.16
申请号 WO2012GB00090 申请日期 2012.01.30
申请人 CONCRETE SOCK LIMITED;GOFF, KARL 发明人 GOFF, KARL
分类号 B28C5/08;B28C5/42;E04G21/04 主分类号 B28C5/08
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