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发明名称
Schaltungsanordnung zum Anschluss eines Lautsprechers an normale Fernsprechnetze
摘要
申请公布号
DE848520(C)
申请公布日期
1952.09.04
申请号
DE1942H002817D
申请日期
1942.06.19
申请人
HAGENUK HANSEATISCHE APPARATEBAU-GESELLSCHAFT NEUFELDT & KUHNKE
发明人
SENGEWITZ LOTHAR
分类号
H04M1/60
主分类号
H04M1/60
代理机构
代理人
主权项
地址
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