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经营范围
发明名称
Railway rail
摘要
申请公布号
US1970588(A)
申请公布日期
1934.08.21
申请号
US19320638610
申请日期
1932.10.19
申请人
THE JOINT COMPANY
发明人
WOLHAUPTER DAVID P.
分类号
E01B5/02
主分类号
E01B5/02
代理机构
代理人
主权项
地址
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