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发明名称
Self-polarized electrostatic microphone-semiconductor amplifier combination
摘要
申请公布号
US3300585(A)
申请公布日期
1967.01.24
申请号
US19630313021
申请日期
1963.10.01
申请人
NORTHERN ELECTRIC COMPANY, LIMITED
发明人
REEDYK CORNELIS WILFRED;FATOVIC PETER
分类号
H03F3/183;H03F3/185;H04R19/01;H04R19/04
主分类号
H03F3/183
代理机构
代理人
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