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发明名称
Aus zwei Kreisen bestehendes elektrisches Koppelsystem
摘要
申请公布号
DE652919(C)
申请公布日期
1937.11.11
申请号
DE1931H127932D
申请日期
1931.07.29
申请人
HAZELTINE CORPORATION
发明人
分类号
H01F21/12
主分类号
H01F21/12
代理机构
代理人
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