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发明名称
Camera
摘要
申请公布号
US1847988(A)
申请公布日期
1932.03.01
申请号
US19290402434
申请日期
1929.10.25
申请人
SEMEL SAMUEL I
发明人
SEMEL SAMUEL I.
分类号
G03B17/53
主分类号
G03B17/53
代理机构
代理人
主权项
地址
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