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发明名称
Photographic apparatus
摘要
申请公布号
US1858423(A)
申请公布日期
1932.05.17
申请号
US19310529018
申请日期
1931.04.10
申请人
ELLIS WEISKER
发明人
WEISKER ELLIS
分类号
G03B27/60
主分类号
G03B27/60
代理机构
代理人
主权项
地址
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