Способ усиления рельефности звуковой тоновой записи,申请号SU19360186546-传众专利搜索

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发明名称	Способ усиления рельефности звуковой тоновой записи
摘要
申请公布号	SU49355(A1)	申请公布日期	1936.08.31
申请号	SU19360186546	申请日期	1936.02.09
申请人	FILATOV A.A.	发明人	FILATOV A.A.
分类号	G03B31/00	主分类号	G03B31/00
代理机构		代理人
主权项
地址

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