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发明名称
Spole med Midler til saavel trinvis som kontinuerlig Variation af Selvinduktionen.
摘要
申请公布号
DK64408(C)
申请公布日期
1946.04.15
申请号
DK19430002298
申请日期
1943.08.31
申请人
WILHELM JOHNSEN A/S
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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