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发明名称
Vorrichtung zur automatischen, elektronisch gesteuerten Belichtungs-regelung fuer Mikrofilm-Durchlaufgeraete
摘要
申请公布号
DE1056920(B)
申请公布日期
1959.05.06
申请号
DE1957S055790
申请日期
1957.11.07
申请人
FA. F. SOENNECKEN
发明人
MACKRODT HELMUT;EICHBERGER FRANZ R.
分类号
G03B27/80
主分类号
G03B27/80
代理机构
代理人
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地址
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