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发明名称
OBJECT LENS FOR WRITING AND READING
摘要
申请公布号
JPS55134815(A)
申请公布日期
1980.10.21
申请号
JP19800040576
申请日期
1980.03.31
申请人
DISCOVISION ASS
发明人
RII MITSUKURUSON
分类号
G02B13/00;G02B9/34;G02B13/24
主分类号
G02B13/00
代理机构
代理人
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地址
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