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发明名称
摘要
申请公布号
JPS5245233(Y2)
申请公布日期
1977.10.14
申请号
JP19720118184U
申请日期
1972.10.13
申请人
发明人
分类号
G03B21/64;G03B21/11;G03B23/00;G03B23/04;(IPC1-7):G03B23/00
主分类号
G03B21/64
代理机构
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