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发明名称
Einseitig leitend belegte Membran fuer elektrostatische Mikrophone oder Telephone
摘要
申请公布号
DE702451(C)
申请公布日期
1941.02.07
申请号
DE193501M2686D
申请日期
1935.11.20
申请人
JOSEPH MASSOLLE G.M.B.H.;JOSEPH MASSOLLE
发明人
分类号
H04R19/00
主分类号
H04R19/00
代理机构
代理人
主权项
地址
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