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经营范围
发明名称
Photographing apparatus
摘要
申请公布号
US2315452(A)
申请公布日期
1943.03.30
申请号
US19400325221
申请日期
1940.03.21
申请人
PIFER GEORGE N
发明人
PIFER GEORGE N.
分类号
G03B27/46
主分类号
G03B27/46
代理机构
代理人
主权项
地址
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