Vorrichtung zum Abbau von Kohle in steilen Floezen,申请号DE1931M117621D-传众专利搜索

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发明名称	Vorrichtung zum Abbau von Kohle in steilen Floezen
摘要
申请公布号	DE569718(C)	申请公布日期	1933.02.07
申请号	DE1931M117621D	申请日期	1931.11.13
申请人	MANNESMANNROEHREN-WERKE	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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