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发明名称
METHOD AND APPARATUS FOR BREAKING CONCRETE OR THE LIKE
摘要
<p>A substrate breaking apparatus (10) and method including a frame (12) and a plurality of independently controlled hammers (14) movable between a lowered position and a raised position.</p>
申请公布号
WO1997016601(A1)
申请公布日期
1997.05.09
申请号
US1996017294
申请日期
1996.10.29
申请人
发明人
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主分类号
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