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发明名称
Improvements in devices for adjusting the iris diaphragms of mirror-reflex photographic cameras
摘要
申请公布号
GB635322(A)
申请公布日期
1950.04.05
申请号
GB19470034674
申请日期
1947.12.30
申请人
FRITZ VICTOR HASSELBLAD
发明人
分类号
G03B19/12
主分类号
G03B19/12
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