Vorrichtung fuer die Gesteinstaubbekaempfung mittels Wasser oder Schaum,申请号DE193701R0234D-传众专利搜索

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发明名称	Vorrichtung fuer die Gesteinstaubbekaempfung mittels Wasser oder Schaum
摘要
申请公布号	DE693283(C)	申请公布日期	1940.07.05
申请号	DE193701R0234D	申请日期	1937.09.11
申请人	ANDREAS RINGELBAND	发明人	RINGELBAND ANDREAS
分类号	E21B21/01	主分类号	E21B21/01
代理机构		代理人
主权项
地址

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