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发明名称
摘要
申请公布号
JPS5950749(B2)
申请公布日期
1984.12.10
申请号
JP19810122796
申请日期
1981.08.05
申请人
NIPPON STEEL CORP
发明人
SAKANOE NORIO;TOYAMA KOSEI;YAMAMOTO HIROSHI;SATO YASUO;ANDO KEIJI
分类号
C22B1/20
主分类号
C22B1/20
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代理人
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