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经营范围
发明名称
DRAFT RIGGING
摘要
申请公布号
CA482857(A)
申请公布日期
1952.04.29
申请号
CAD482857
申请日期
申请人
NATIONAL MALLEABLE AND STEEL CASTINGS COMPANY
发明人
WILLIAM J. METZGER
分类号
主分类号
代理机构
代理人
主权项
地址
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