CN2580085Y - 螺杆钻具传动轴防落装置 - Google Patents
螺杆钻具传动轴防落装置 Download PDFInfo
- Publication number
- CN2580085Y CN2580085Y CN 02282348 CN02282348U CN2580085Y CN 2580085 Y CN2580085 Y CN 2580085Y CN 02282348 CN02282348 CN 02282348 CN 02282348 U CN02282348 U CN 02282348U CN 2580085 Y CN2580085 Y CN 2580085Y
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- Prior art keywords
- transmission shaft
- driving shaft
- pin
- screw drill
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02282348 CN2580085Y (zh) | 2002-10-25 | 2002-10-25 | 螺杆钻具传动轴防落装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN 02282348 CN2580085Y (zh) | 2002-10-25 | 2002-10-25 | 螺杆钻具传动轴防落装置 |
Publications (1)
Publication Number | Publication Date |
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CN2580085Y true CN2580085Y (zh) | 2003-10-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN 02282348 Expired - Lifetime CN2580085Y (zh) | 2002-10-25 | 2002-10-25 | 螺杆钻具传动轴防落装置 |
Country Status (1)
Country | Link |
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CN (1) | CN2580085Y (zh) |
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2002
- 2002-10-25 CN CN 02282348 patent/CN2580085Y/zh not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: CNPC BOHAI PETROLEUM EQUIPMENT MANUFACTURING CO., Free format text: FORMER OWNER: DAGANG OIL FIELD GROUP CO., LTD. Effective date: 20100909 Free format text: FORMER OWNER: DAGANG OILFIELD GROUP, ZHONGCHENG MACHINERY MANUFACTURING CO., LTD. |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300280 DAGANG OILFIELD GROUP CO., LTD., YARD 3, DAGANG OILFIELD, DAGANG DISTRICT, TIANJIN CITY TO: 300280 CHUANGANG ROAD, DAGANG OILFIELD, DAGANG DISTRICT, TIANJIN CITY |
|
TR01 | Transfer of patent right |
Effective date of registration: 20100909 Address after: 300280 Tianjin City, Grand Port Dagang Oilfield Sichuan Road Patentee after: CNPC Bohai Equipment Manufacturing Co., Ltd. Address before: 300280 Dagang Oilfield, No. three, Dagang Oilfield, Tianjin, Grand Port, Refco Group Ltd Co-patentee before: Dagang Oilfield Group, Zhongcheng Machinery Manufacturing Co., Ltd. Patentee before: Dagang Oil Field Group Co., Ltd. |
|
C17 | Cessation of patent right | ||
CX01 | Expiry of patent term |
Expiration termination date: 20121025 Granted publication date: 20031015 |