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发明名称
ROOF OR FLOOR SUPPORT STRUCTURE HAVING CONDUITS
摘要
申请公布号
CA642953(A)
申请公布日期
1962.06.19
申请号
CAD642953
申请日期
申请人
CHARLES W. ATTWOOD
发明人
CHARLES W. ATTWOOD
分类号
主分类号
代理机构
代理人
主权项
地址
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