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发明名称
Microfilm viewer
摘要
申请公布号
US3170259(A)
申请公布日期
1965.02.23
申请号
US19630260339
申请日期
1963.02.21
申请人
FRYE BURTON L R
发明人
FRYE BURTON L. R.
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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