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发明名称
Verfahren zum Versetzen des Messbereiches eines Roehrenvoltmeters
摘要
申请公布号
DE669821(C)
申请公布日期
1939.01.04
申请号
DENDATW095185D
申请日期
申请人
DR. PETER WULFF;DR. WILLY KORDATZKI
发明人
分类号
G01R15/00;G01R17/16
主分类号
G01R15/00
代理机构
代理人
主权项
地址
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