Process for producing an electroconductive sound wave record,申请号US19280297333-传众专利搜索

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发明名称	Process for producing an electroconductive sound wave record
摘要
申请公布号	US1840791(A)	申请公布日期	1932.01.12
申请号	US19280297333	申请日期	1928.08.03
申请人	PAGE HOWARD L	发明人	PAGE HOWARD L.
分类号	G11B11/00	主分类号	G11B11/00
代理机构		代理人
主权项
地址

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