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发明名称
摘要
申请公布号
JPS57148136(U)
申请公布日期
1982.09.17
申请号
JP19820022593U
申请日期
1982.02.19
申请人
发明人
分类号
G03B31/02;(IPC1-7):G03B31/02
主分类号
G03B31/02
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