ULTRASONIC TRANSMITTER AND/OR RECEIVER,申请号GB19740018662-传众专利搜索

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发明名称	ULTRASONIC TRANSMITTER AND/OR RECEIVER
摘要
申请公布号	GB1508305(A)	申请公布日期	1978.04.19
申请号	GB19740018662	申请日期	1974.04.29
申请人	SUNDERLAND POLYTECH	发明人
分类号	G01S7/521;G10K13/00;(IPC1-7):H04R1/32	主分类号	G01S7/521
代理机构		代理人
主权项
地址

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