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发明名称
免持听筒耳机(四)
摘要
申请公布号
CN3274255D
申请公布日期
2003.01.22
申请号
CN02329671.2
申请日期
2002.05.31
申请人
孙文伟;张格常
发明人
孙文伟;张格常
分类号
14-01
主分类号
14-01
代理机构
中科专利商标代理有限责任公司
代理人
朱黎光
主权项
地址
台湾省台北县板桥市和平路14巷30号
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