ARRANGEMENT FOR THREADING AND UNTHREADING DRILLING RODS,申请号SU19772554004-传众专利搜索

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发明名称	ARRANGEMENT FOR THREADING AND UNTHREADING DRILLING RODS
摘要
申请公布号	SU720145(A1)	申请公布日期	1980.03.05
申请号	SU19772554004	申请日期	1977.12.13
申请人	DO G PREKTNO- K EXI KOMPLEKSNOJ MEKH SHAKHT DONGIPROUGLEMASH	发明人	MARTYANOV YURIJ A,SU;POPOV IGOR S,SU;GAJDUKOV ANATOLIJ V,SU
分类号	E21B19/16;(IPC1-7):E21C1/00	主分类号	E21B19/16
代理机构		代理人
主权项
地址

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