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经营范围
发明名称
METHOD OF QUENCHING
摘要
申请公布号
US3475232(A)
申请公布日期
1969.10.28
申请号
USD3475232
申请日期
1966.11.23
申请人
E.F. HOUGHTON & CO.
发明人
MARVIN LEWIS;PAUL J. WELSH
分类号
C21D1/60;(IPC1-7):C21D1/56
主分类号
C21D1/60
代理机构
代理人
主权项
地址
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