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发明名称
LIGHT WEIGHT CONCRETE
摘要
申请公布号
CA338953(A)
申请公布日期
1934.01.30
申请号
CAD338953
申请日期
申请人
ERIK B. BJORKMAN
发明人
ERIK B. BJORKMAN
分类号
主分类号
代理机构
代理人
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地址
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