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发明名称
SOUND DEPRESSOR FOR CONVERTER TUYERE OPENER
摘要
申请公布号
JPS54143721(A)
申请公布日期
1979.11.09
申请号
JP19780051986
申请日期
1978.04.28
申请人
SUMITOMO METAL MINING CO
发明人
OGAWA KUNIO
分类号
C22B23/02;C22B15/06;F27D3/15
主分类号
C22B23/02
代理机构
代理人
主权项
地址
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