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发明名称
VORRICHTUNG ZUR BEGRENZUNG DER LEERLAUFSPANNUNG VON KONSTANTSTROMQUELLEN.
摘要
申请公布号
DE1741711(U)
申请公布日期
1957.03.21
申请号
DE195600J5519U
申请日期
1956.12.22
申请人
W. H. JOENS & CO. G.M.B.H.
发明人
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主分类号
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