CN201738834U - 一种钻井机钻具系统的工字卡联接装置 - Google Patents
一种钻井机钻具系统的工字卡联接装置 Download PDFInfo
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- CN201738834U CN201738834U CN2010202949738U CN201020294973U CN201738834U CN 201738834 U CN201738834 U CN 201738834U CN 2010202949738 U CN2010202949738 U CN 2010202949738U CN 201020294973 U CN201020294973 U CN 201020294973U CN 201738834 U CN201738834 U CN 201738834U
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CN2010202949738U CN201738834U (zh) | 2010-08-18 | 2010-08-18 | 一种钻井机钻具系统的工字卡联接装置 |
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CN2010202949738U CN201738834U (zh) | 2010-08-18 | 2010-08-18 | 一种钻井机钻具系统的工字卡联接装置 |
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CN201738834U true CN201738834U (zh) | 2011-02-09 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102400650A (zh) * | 2011-08-30 | 2012-04-04 | 中煤矿山建设集团有限责任公司 | 一种钻具 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102400650A (zh) * | 2011-08-30 | 2012-04-04 | 中煤矿山建设集团有限责任公司 | 一种钻具 |
CN102400650B (zh) * | 2011-08-30 | 2013-11-27 | 中煤矿山建设集团有限责任公司 | 一种钻具 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CU01 | Correction of utility model patent |
Correction item: First inventor Correct: Niu Tingzhi False: Zhu Tingzhi Number: 06 Page: The title page Volume: 27 |
|
CU03 | Correction of utility model patent gazette |
Correction item: Inventor Correct: Niu Tingzhi|Wang Jisheng|Liao Weiyong|Wang Zhanjun|Wang Haibo False: Zhu Tingzhi|Wang Jisheng|Liao Weiyong|Wang Zhanjun|Wang Haibo Number: 06 Volume: 27 |
|
ERR | Gazette correction |
Free format text: CORRECT: INVENTOR; FROM: ZHU TINGZHI; WANG JISHENG, LIAO WEIYONG, WANG ZHANJUN, WANG HAIBO TO: NIU TINGZHI; WANG JISHENG, LIAO WEIYONG, WANG ZHANJUN, WANG HAIBO |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20180818 |
|
CF01 | Termination of patent right due to non-payment of annual fee |