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经营范围
发明名称
Flame hardening of rails
摘要
申请公布号
GB823463(A)
申请公布日期
1959.11.11
申请号
GB19570019227
申请日期
1957.06.18
申请人
THE BRITISH OXYGEN COMPANY LIMITED
发明人
COLLIGAN GEORGE KELVIN
分类号
C21D9/04
主分类号
C21D9/04
代理机构
代理人
主权项
地址
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