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经营范围
发明名称
Camera diaphragm
摘要
申请公布号
US2340573(A)
申请公布日期
1944.02.01
申请号
US19410384434
申请日期
1941.03.21
申请人
MCG AIKEN THOMAS
发明人
AIKEN THOMAS MCG.
分类号
G03B9/08
主分类号
G03B9/08
代理机构
代理人
主权项
地址
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