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发明名称
Photographic shutters
摘要
申请公布号
GB315707(A)
申请公布日期
1930.05.22
申请号
GB19290020663
申请日期
1929.07.05
申请人
ARPAD BARENYI
发明人
分类号
G03B9/20
主分类号
G03B9/20
代理机构
代理人
主权项
地址
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