A new or improved type of cone for use in wireless loudspeakers, telephones, and the like,申请号GB19320033722-传众专利搜索

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发明名称	A new or improved type of cone for use in wireless loudspeakers, telephones, and the like
摘要
申请公布号	GB410535(A)	申请公布日期	1934.05.24
申请号	GB19320033722	申请日期	1932.11.29
申请人	FRANK HARRISON	发明人
分类号	H04R7/12	主分类号	H04R7/12
代理机构		代理人
主权项
地址

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