Sound recording and producing method,申请号US19300465024-传众专利搜索

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发明名称	Sound recording and producing method
摘要
申请公布号	US1917279(A)	申请公布日期	1933.07.11
申请号	US19300465024	申请日期	1930.06.30
申请人	GEORGE SHACKELFORD	发明人	WHITMAN STEWART C.
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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