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发明名称
Exposure time adjustment in camera shutters
摘要
申请公布号
US2901954(A)
申请公布日期
1959.09.01
申请号
US19550507089
申请日期
1955.05.09
申请人
SHUICHI AMANO
发明人
AMANO SHUICHI
分类号
G03B9/42
主分类号
G03B9/42
代理机构
代理人
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地址
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