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发明名称
摘要
申请公布号
JPS5236048(U)
申请公布日期
1977.03.14
申请号
JP19750123011U
申请日期
1975.09.05
申请人
发明人
分类号
G03B21/00;G03B21/11;G03B21/14;G03B21/16;(IPC1-7):G03B21/14
主分类号
G03B21/00
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