Perfectionnements apportés aux dispositifs pour retenir les charbons abattus dans des couloirs ou galeries à pendage raide ou semi-raide,申请号FRD1043189-传众专利搜索

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发明名称	Perfectionnements apportés aux dispositifs pour retenir les charbons abattus dans des couloirs ou galeries à pendage raide ou semi-raide
摘要
申请公布号	FR1043189(A)	申请公布日期	1953.11.06
申请号	FRD1043189	申请日期	1951.08.30
申请人	F.W.MOLL SOHNE	发明人
分类号	E21F13/06	主分类号	E21F13/06
代理机构		代理人
主权项
地址

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