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经营范围
发明名称
CONTINUOUS VACUUM REFINING METHOD
摘要
申请公布号
JPH0317221(A)
申请公布日期
1991.01.25
申请号
JP19890148465
申请日期
1989.06.13
申请人
NKK CORP
发明人
TAKAOKA TOSHIO;KIKUCHI YOSHITERU;MATSUNO EIJU;KAWAI YOSHIHIKO;USUI TSUTOMU
分类号
C22B9/04;C21C7/10
主分类号
C22B9/04
代理机构
代理人
主权项
地址
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