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发明名称
WAY TO MANUFACTURE STEEL BOX PROTECTOR FOR TOOL JOINT OF DRILL PIPE
摘要
申请公布号
RU1834780(C)
申请公布日期
1993.08.15
申请号
SU19904908108
申请日期
1990.10.23
申请人
VSESOYUZNYJ NAUCHNO-ISSLEDOVATELSKIJ INSTITUT RAZRABOTKI I EKSPLUATATSII NEFTEPROMYSLOVYKH TRUB
发明人
GORELOV VIKTOR I;SUBBOTIN STANISLAV S
分类号
B23P11/02
主分类号
B23P11/02
代理机构
代理人
主权项
地址
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