Improvements in, or relating to, drill shafts and bits adapted to be used with percussive drills,申请号GB19340027651-传众专利搜索

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发明名称	Improvements in, or relating to, drill shafts and bits adapted to be used with percussive drills
摘要
申请公布号	GB433012(A)	申请公布日期	1935.08.07
申请号	GB19340027651	申请日期	1934.09.26
申请人	REGINALD ASLINE BEDFORD	发明人
分类号	E21B10/36	主分类号	E21B10/36
代理机构		代理人
主权项
地址

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