Improvements in or relating to apparatus for sound recording,申请号GB19360035108-传众专利搜索

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发明名称	Improvements in or relating to apparatus for sound recording
摘要
申请公布号	GB489223(A)	申请公布日期	1938.07.21
申请号	GB19360035108	申请日期	1936.12.21
申请人	KLANGFILM G.M.B.H.	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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