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发明名称
摘要
申请公布号
JPS5244438(B2)
申请公布日期
1977.11.08
申请号
JP19720015232
申请日期
1972.02.15
申请人
发明人
分类号
C04B35/46;C04B35/468;H01B3/12;H01G4/12;H01L41/39
主分类号
C04B35/46
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代理人
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