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经营范围
发明名称
REINFORCED WOOD RAILROAD TIE
摘要
申请公布号
CA877151(A)
申请公布日期
1971.08.03
申请号
CAD877151
申请日期
申请人
KOPPERS COMPANY
发明人
CHARLES J. PENNINO
分类号
主分类号
代理机构
代理人
主权项
地址
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