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经营范围
发明名称
Kristalltonabnehmer, insbesondere fuer Schallplatten
摘要
申请公布号
DE827874(C)
申请公布日期
1952.01.14
申请号
DE1950T002556
申请日期
1950.09.17
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
BATSCH DR. HELMUT;EXNER DR. ERHARD
分类号
H04R17/04
主分类号
H04R17/04
代理机构
代理人
主权项
地址
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