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发明名称
CONCRETE SURFACE TREATING APPARATUS
摘要
申请公布号
CA408073(A)
申请公布日期
1942.10.20
申请号
CAD408073
申请日期
申请人
LOUIS S. WERTZ
发明人
LOUIS S. WERTZ
分类号
主分类号
代理机构
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