Phonograph,申请号US19280317397-传众专利搜索

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发明名称	Phonograph
摘要
申请公布号	US1865550(A)	申请公布日期	1932.07.05
申请号	US19280317397	申请日期	1928.11.05
申请人	BARROWS GRACE A;CURTIS HAROLD P	发明人	BARROWS GRACE A.;CURTIS HAROLD P.
分类号	G10K13/00	主分类号	G10K13/00
代理机构		代理人
主权项
地址

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