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发明名称
Photography
摘要
申请公布号
US2196133(A)
申请公布日期
1940.04.02
申请号
US19370164990
申请日期
1937.09.21
申请人
ROBERT LAING BRUCE GALL
发明人
WEBB KEVIN WILLIAM CATON
分类号
G03C7/30
主分类号
G03C7/30
代理机构
代理人
主权项
地址
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