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经营范围
发明名称
ELECTRET CAPACITOR MICROPHONE
摘要
申请公布号
JPS627300(A)
申请公布日期
1987.01.14
申请号
JP19850146015
申请日期
1985.07.03
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
BABA HIROYUKI
分类号
H04R19/00;H04R19/01
主分类号
H04R19/00
代理机构
代理人
主权项
地址
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