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发明名称
Viewer for photographic slides
摘要
申请公布号
US2805500(A)
申请公布日期
1957.09.10
申请号
US19540446490
申请日期
1954.07.29
申请人
JULIUS DIXLER
发明人
DIXLER JULIUS
分类号
G02B27/02
主分类号
G02B27/02
代理机构
代理人
主权项
地址
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