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发明名称
摘要
申请公布号
JPH0440756(U)
申请公布日期
1992.04.07
申请号
JP19900082505U
申请日期
1990.08.03
申请人
发明人
分类号
C21D1/34;C21D1/52;C21D9/56;(IPC1-7):C21D1/34
主分类号
C21D1/34
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代理人
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