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经营范围
发明名称
RAILWAY TIE AND RAIL FASTENERS
摘要
申请公布号
CA482261(A)
申请公布日期
1952.04.08
申请号
CAD482261
申请日期
申请人
WILLIAM H. KOCH
发明人
WILLIAM H. KOCH
分类号
主分类号
代理机构
代理人
主权项
地址
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