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经营范围
发明名称
Micro-film projector
摘要
申请公布号
US2937569(A)
申请公布日期
1960.05.24
申请号
US19550538493
申请日期
1955.09.14
申请人
AMERICAN OPTICAL COMPANY
发明人
WILTON HENRY T.
分类号
G03B21/11
主分类号
G03B21/11
代理机构
代理人
主权项
地址
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