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发明名称
摘要
申请公布号
JPS4722240(U)
申请公布日期
1972.11.13
申请号
JP19710023652U
申请日期
1971.04.02
申请人
发明人
分类号
C03B9/32;C03B9/02;C03B9/34;C03B9/347;(IPC1-7):C03B9/02
主分类号
C03B9/32
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