,申请号DE19712132127-传众专利搜索

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发明名称
摘要
申请公布号	DE2132127(B2)	申请公布日期	1974.05.16
申请号	DE19712132127	申请日期	1971.06.28
申请人	GRADO, JOSEPH F., NEW YORK, N.Y. (V.ST.A.)	发明人	GRADO, JOSEPH F., NEW YORK, N.Y. (V.ST.A.)
分类号	H04R11/12;(IPC1-7):H04R11/12	主分类号	H04R11/12
代理机构		代理人
主权项
地址

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