CN201915989U - Mine gas pumping and discharging hole packer - Google Patents
Mine gas pumping and discharging hole packer Download PDFInfo
- Publication number
- CN201915989U CN201915989U CN2010206921642U CN201020692164U CN201915989U CN 201915989 U CN201915989 U CN 201915989U CN 2010206921642 U CN2010206921642 U CN 2010206921642U CN 201020692164 U CN201020692164 U CN 201020692164U CN 201915989 U CN201915989 U CN 201915989U
- Authority
- CN
- China
- Prior art keywords
- connecting piece
- pipe connecting
- mine gas
- pump drainage
- gas pump
- 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
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- Piles And Underground Anchors (AREA)
Abstract
Description
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010206921642U CN201915989U (en) | 2010-12-31 | 2010-12-31 | Mine gas pumping and discharging hole packer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010206921642U CN201915989U (en) | 2010-12-31 | 2010-12-31 | Mine gas pumping and discharging hole packer |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201915989U true CN201915989U (en) | 2011-08-03 |
Family
ID=44415789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010206921642U Expired - Fee Related CN201915989U (en) | 2010-12-31 | 2010-12-31 | Mine gas pumping and discharging hole packer |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201915989U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103291352A (en) * | 2013-06-24 | 2013-09-11 | 中国矿业大学(北京) | Mechanical spiral hole packer used for draining coal seam gas |
-
2010
- 2010-12-31 CN CN2010206921642U patent/CN201915989U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103291352A (en) * | 2013-06-24 | 2013-09-11 | 中国矿业大学(北京) | Mechanical spiral hole packer used for draining coal seam gas |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C53 | Correction of patent for invention or patent application | ||
C56 | Change in the name or address of the patentee |
Owner name: CHEN YUANMING Free format text: FORMER NAME: CHEN YUANPENG |
|
CB03 | Change of inventor or designer information |
Inventor after: Chen Yuanming Inventor before: Chen Yuanpeng |
|
COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN YUANPENG TO: CHEN YUANMING |
|
CP01 | Change in the name or title of a patent holder |
Address after: 325600 Zhejiang city of Wenzhou province Yueqing city wengyang town No. 180 North Street Patentee after: Chen Yuanming Address before: 325600 Zhejiang city of Wenzhou province Yueqing city wengyang town No. 180 North Street Patentee before: Chen Yuanpeng |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20131231 |