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发明名称
Magnifying device
摘要
申请公布号
US3039350(A)
申请公布日期
1962.06.19
申请号
US19600006311
申请日期
1960.02.02
申请人
GOLLHOFER PAUL J
发明人
GOLLHOFER PAUL J.
分类号
G02B25/02
主分类号
G02B25/02
代理机构
代理人
主权项
地址
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