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经营范围
发明名称
Producing an off-hook signal upon detaching earphone/microphone jack plug.
摘要
申请公布号
GB2375932(A)
申请公布日期
2002.11.27
申请号
GB20020020589
申请日期
1998.11.25
申请人
* NEC CORPORATION
发明人
ATSUNORI * NAKAMURA
分类号
H04M1/06;H04M1/15;H04M1/60;H04M1/725;(IPC1-7):H04B1/38;H04Q7/32
主分类号
H04M1/06
代理机构
代理人
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地址
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