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发明名称
Anordnung zur Stabilisierung piezoelektrischer Mikrophonplatten aus nicht kristallinem Material
摘要
申请公布号
DE516684(C)
申请公布日期
1934.01.11
申请号
DENDATT035507D
申请日期
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H04R3/04
主分类号
H04R3/04
代理机构
代理人
主权项
地址
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