Hollow conical electromechanical transducer,申请号US19580728497-传众专利搜索

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发明名称	Hollow conical electromechanical transducer
摘要
申请公布号	US3030606(A)	申请公布日期	1962.04.17
申请号	US19580728497	申请日期	1958.04.14
申请人	HARRIS WILBUR T	发明人	HARRIS WILBUR T.
分类号	B06B1/06;H04R17/00	主分类号	B06B1/06
代理机构		代理人
主权项
地址

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