Method for preventing the ignition of fire-damp and coal dust during mine blasting,申请号GB19340008169-传众专利搜索

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发明名称	Method for preventing the ignition of fire-damp and coal dust during mine blasting
摘要
申请公布号	GB422255(A)	申请公布日期	1935.01.08
申请号	GB19340008169	申请日期	1934.03.15
申请人	LES PETITS FILS DE FRANCOIS DE WENDEL & CIE	发明人
分类号	F42D1/24	主分类号	F42D1/24
代理机构		代理人
主权项
地址

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