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发明名称
Photographic shutter
摘要
申请公布号
US1861257(A)
申请公布日期
1932.05.31
申请号
US19300474987
申请日期
1930.08.13
申请人
ARPAD BARENYI
发明人
BARENYI ARPAD
分类号
G03B9/22
主分类号
G03B9/22
代理机构
代理人
主权项
地址
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