Spark recording apparatus,申请号US19460715194-传众专利搜索

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发明名称	Spark recording apparatus
摘要
申请公布号	US2551466(A)	申请公布日期	1951.05.01
申请号	US19460715194	申请日期	1946.12.10
申请人	ETABLISSEMENTS HENRY-LEPAUTE	发明人	SALMON-LEGAGNEUR PIERRE;MAUNY GERARD
分类号	G04D7/12	主分类号	G04D7/12
代理机构		代理人
主权项
地址

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