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发明名称
Improvements in magnifying glasses
摘要
申请公布号
GB440996(A)
申请公布日期
1936.01.09
申请号
GB19350018261
申请日期
1935.06.26
申请人
EMIL BUSCH AKTIENGESELLSCHAFT OPTISCHE INDUSTRIE
发明人
分类号
G02B25/00
主分类号
G02B25/00
代理机构
代理人
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地址
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