ELECTRO-ACOUSTIC TRANSDUCER,申请号CAD836173-传众专利搜索

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发明名称	ELECTRO-ACOUSTIC TRANSDUCER
摘要
申请公布号	CA836173(A)	申请公布日期	1970.03.03
申请号	CAD836173	申请日期
申请人	ROANWELL CORPORATION	发明人	VITO L. CARBONARO
分类号		主分类号
代理机构		代理人
主权项
地址

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