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发明名称
Gegen Feuchtigkeit weitgehend geschuetzte Mikrophonkapsel
摘要
申请公布号
DE734782(C)
申请公布日期
1943.04.24
申请号
DE1937T048247D
申请日期
1937.02.25
申请人
TELEFONBAU UND NORMALZEIT LEHNER & CO.
发明人
AMANN MAX;ROTH RUDOLF
分类号
H04R1/08
主分类号
H04R1/08
代理机构
代理人
主权项
地址
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