Ferroelectric recording and reproduction of speech,申请号US19540479208-传众专利搜索

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发明名称	Ferroelectric recording and reproduction of speech
摘要
申请公布号	US2775650(A)	申请公布日期	1956.12.25
申请号	US19540479208	申请日期	1954.12.31
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	MASON WARREN P.;THURSTON ROBERT N.
分类号	C04B35/46;C04B35/48;C04B35/50;C04B35/51;G11B5/004;G11B5/74;G11B9/02	主分类号	C04B35/46
代理机构		代理人
主权项
地址

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