Apparatus for combatting dust at working points, more especially at the face in underground mining,申请号GB19540026816-传众专利搜索

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发明名称	Apparatus for combatting dust at working points, more especially at the face in underground mining
摘要
申请公布号	GB752740(A)	申请公布日期	1956.07.11
申请号	GB19540026816	申请日期	1954.09.15
申请人	STEINKOHLENBERGWERK HANNOVER-HANNIBAL AKTIENGESELLSCHAFT	发明人
分类号	E21F5/00	主分类号	E21F5/00
代理机构		代理人
主权项
地址

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