Improvements in or relating to oscillatory diaphragm devices,申请号GB19510019096-传众专利搜索

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发明名称	Improvements in or relating to oscillatory diaphragm devices
摘要
申请公布号	GB690016(A)	申请公布日期	1953.04.08
申请号	GB19510019096	申请日期	1951.08.14
申请人	CARL VON BASEL	发明人
分类号	G01P15/03;H04R7/24	主分类号	G01P15/03
代理机构		代理人
主权项
地址

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