ELECTRO-ACOUSTIC TRANSDUCERS,申请号GB19700019487-传众专利搜索

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发明名称	ELECTRO-ACOUSTIC TRANSDUCERS
摘要
申请公布号	GB1219919(A)	申请公布日期	1971.01.20
申请号	GB19700019487	申请日期	1968.08.08
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人	LESLIE EUGENE BASIL DYMOKE-BRADSHAW;NORMAN WILLIAM TESTER
分类号	H04R7/22;H04R9/02	主分类号	H04R7/22
代理机构		代理人
主权项
地址

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