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发明名称
Process for producing rails
摘要
申请公布号
US2186966(A)
申请公布日期
1940.01.16
申请号
US19360110045
申请日期
1936.11.10
申请人
GEORGE HARRY S
发明人
GEORGE HARRY S.
分类号
B21B1/08
主分类号
B21B1/08
代理机构
代理人
主权项
地址
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