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发明名称
MICROPHONE PROVIDED WITH EARPHONE
摘要
申请公布号
GB2231465(A)
申请公布日期
1990.11.14
申请号
GB19890012429
申请日期
1987.11.05
申请人
SAKAE * MASUMOTO
发明人
SAKAE * MASUMOTO
分类号
H04R1/04;H04R1/08;H04R3/00
主分类号
H04R1/04
代理机构
代理人
主权项
地址
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