CN201778682U - 一种螺杆钻具可换套扶正器 - Google Patents
一种螺杆钻具可换套扶正器 Download PDFInfo
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- CN201778682U CN201778682U CN201020293341XU CN201020293341U CN201778682U CN 201778682 U CN201778682 U CN 201778682U CN 201020293341X U CN201020293341X U CN 201020293341XU CN 201020293341 U CN201020293341 U CN 201020293341U CN 201778682 U CN201778682 U CN 201778682U
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- centralizer
- screw drill
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CN201020293341XU CN201778682U (zh) | 2010-08-17 | 2010-08-17 | 一种螺杆钻具可换套扶正器 |
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CN201020293341XU CN201778682U (zh) | 2010-08-17 | 2010-08-17 | 一种螺杆钻具可换套扶正器 |
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CN201778682U true CN201778682U (zh) | 2011-03-30 |
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CN201020293341XU Expired - Fee Related CN201778682U (zh) | 2010-08-17 | 2010-08-17 | 一种螺杆钻具可换套扶正器 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104948122A (zh) * | 2014-03-26 | 2015-09-30 | 中国石油化工集团公司 | 用于螺杆钻具的滚珠式扶正器 |
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- 2010-08-17 CN CN201020293341XU patent/CN201778682U/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104948122A (zh) * | 2014-03-26 | 2015-09-30 | 中国石油化工集团公司 | 用于螺杆钻具的滚珠式扶正器 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANDONG LUHAI PETROLEUM EQUIPMENT CO., LTD. |
|
CP03 | Change of name, title or address |
Address after: 250000 North Road, middle of Beichen Road, Lingxian County Economic Development Zone, Dezhou, Shandong Patentee after: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO., LTD. Address before: 253500 North Road, middle of Beichen Road, Lingxian County Development Zone, Shandong Patentee before: Shandong Luhai Petroleum Equipment Co., Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20160817 |
|
CF01 | Termination of patent right due to non-payment of annual fee |