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发明名称
SELF-PORTRAIT LENS ATTACHMENT
摘要
申请公布号
GB8927644(D0)
申请公布日期
1990.02.07
申请号
GB19890027644
申请日期
1989.12.07
申请人
HOUGHTON, JOHN E
发明人
分类号
G02B3/00;G03B17/06
主分类号
G02B3/00
代理机构
代理人
主权项
地址
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