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发明名称
Improvements relating to photography
摘要
申请公布号
GB325187(A)
申请公布日期
1930.02.13
申请号
GB19290027683
申请日期
1929.09.11
申请人
GEORGE CHASE BEIDLER
发明人
分类号
G03D3/08
主分类号
G03D3/08
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代理人
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