Speech amplifier tube,申请号US20000119423F-传众专利搜索

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发明名称	Speech amplifier tube
摘要
申请公布号	USD445105(S1)	申请公布日期	2001.07.17
申请号	US20000119423F	申请日期	2000.02.29
申请人	BRINSON BETH W.	发明人	BRINSON BETH W.
分类号		主分类号
代理机构		代理人
主权项
地址

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