CN204238865U - 一种旋挖钻机钻杆的分段连接结构 - Google Patents
一种旋挖钻机钻杆的分段连接结构 Download PDFInfo
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- CN204238865U CN204238865U CN201420549201.2U CN201420549201U CN204238865U CN 204238865 U CN204238865 U CN 204238865U CN 201420549201 U CN201420549201 U CN 201420549201U CN 204238865 U CN204238865 U CN 204238865U
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Cited By (1)
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CN104295247A (zh) * | 2014-09-23 | 2015-01-21 | 英联鑫博(天津)机械制造有限公司 | 一种旋挖钻机钻杆的分段连接结构 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104295247A (zh) * | 2014-09-23 | 2015-01-21 | 英联鑫博(天津)机械制造有限公司 | 一种旋挖钻机钻杆的分段连接结构 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CB03 | Change of inventor or designer information | ||
CB03 | Change of inventor or designer information |
Inventor after: Zhao Xinyu Inventor before: Zhao Xinyu Inventor before: Hu Lianqi |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20200323 Address after: No.236 CaoShi village, Songzhuang Town, Tongzhou District, Beijing Patentee after: Zhao Xinyu Address before: 301800 Baodi 232 state-owned factory, Tianjin Patentee before: YINGLIAN XINBO (TIANJIN) MACHINERY MANUFACTURING Co.,Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20210923 |