Bohrkopf zum Niederbringen vertikaler,unverrohrter Bohrungen in lockerem Erdreich,申请号DED1484520-传众专利搜索

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发明名称	Bohrkopf zum Niederbringen vertikaler,unverrohrter Bohrungen in lockerem Erdreich
摘要
申请公布号	DE1484520(B)	申请公布日期	1969.09.11
申请号	DED1484520	申请日期	1960.12.17
申请人	N.V. TOT AANNEMING VAN WERKEN VOORHEEN H.J. NEDERHORST	发明人	FRANCOIS VAN WEELE,ABRAHAM
分类号	E21B7/18	主分类号	E21B7/18
代理机构		代理人
主权项
地址

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