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发明名称
Preselector for optical diaphragms
摘要
申请公布号
US2878738(A)
申请公布日期
1959.03.24
申请号
US19560582876
申请日期
1956.05.04
申请人
JOS. SCHNEIDER & CO.
发明人
UHLAND ERICH
分类号
G03B9/07
主分类号
G03B9/07
代理机构
代理人
主权项
地址
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