Transducer,申请号US19470740419-传众专利搜索

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发明名称	Transducer
摘要
申请公布号	US2454496(A)	申请公布日期	1948.11.23
申请号	US19470740419	申请日期	1947.04.09
申请人	O. W. STOREY & ASSOCIATES	发明人	ASHTON HOWARD W.
分类号	H04R1/42;H04R23/00	主分类号	H04R1/42
代理机构		代理人
主权项
地址

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