CN2910434Y - 背栓钻头 - Google Patents
背栓钻头 Download PDFInfo
- Publication number
- CN2910434Y CN2910434Y CN 200620040664 CN200620040664U CN2910434Y CN 2910434 Y CN2910434 Y CN 2910434Y CN 200620040664 CN200620040664 CN 200620040664 CN 200620040664 U CN200620040664 U CN 200620040664U CN 2910434 Y CN2910434 Y CN 2910434Y
- Authority
- CN
- China
- Prior art keywords
- cutting head
- drilling rod
- head
- hole section
- water
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620040664 CN2910434Y (zh) | 2006-03-30 | 2006-03-30 | 背栓钻头 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620040664 CN2910434Y (zh) | 2006-03-30 | 2006-03-30 | 背栓钻头 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2910434Y true CN2910434Y (zh) | 2007-06-13 |
Family
ID=38132299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200620040664 Expired - Fee Related CN2910434Y (zh) | 2006-03-30 | 2006-03-30 | 背栓钻头 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2910434Y (zh) |
-
2006
- 2006-03-30 CN CN 200620040664 patent/CN2910434Y/zh not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huainan Shunhui Cathead Co., Ltd. Assignor: Shanghai Feier Building Anchor Bolt Co., Ltd. Contract fulfillment period: 2007.11.20 to 2015.11.19 Contract record no.: 2009340000045 Denomination of utility model: Back bolt drill Granted publication date: 20070613 License type: Exclusive license Record date: 20090417 |
|
LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.11.20 TO 2015.11.19; CHANGE OF CONTRACT Name of requester: HUAINAN CITY SHUNHUI ANCHORING CO., LTD. Effective date: 20090417 |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070613 |