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经营范围
发明名称
Quenching device for quenching the ends of abutting rails in a track joint
摘要
申请公布号
US2538366(A)
申请公布日期
1951.01.16
申请号
US19450606242
申请日期
1945.07.20
申请人
WELDING SERVICE, INC.
发明人
KERWIN DANIEL G.
分类号
C21D1/667;C21D9/04
主分类号
C21D1/667
代理机构
代理人
主权项
地址
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