Improvements in and relating to methods of and apparatus for recording rythmical pulses,申请号GB19290027420-传众专利搜索

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发明名称	Improvements in and relating to methods of and apparatus for recording rythmical pulses
摘要
申请公布号	GB341844(A)	申请公布日期	1931.01.09
申请号	GB19290027420	申请日期	1929.09.09
申请人	CARL ROBERT BLUM	发明人
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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