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申请公布号
JPS5234102(Y2)
申请公布日期
1977.08.04
申请号
JP19720120808U
申请日期
1972.10.19
申请人
发明人
分类号
G03B17/00;G03B1/12;G03B17/26;G03C3/00;G03C3/02;(IPC1-7):G03B1/12
主分类号
G03B17/00
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