CN201288580Y - Bottom seat structure for low coal seam mining - Google Patents
Bottom seat structure for low coal seam mining Download PDFInfo
- Publication number
- CN201288580Y CN201288580Y CNU200820149920XU CN200820149920U CN201288580Y CN 201288580 Y CN201288580 Y CN 201288580Y CN U200820149920X U CNU200820149920X U CN U200820149920XU CN 200820149920 U CN200820149920 U CN 200820149920U CN 201288580 Y CN201288580 Y CN 201288580Y
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- bridge
- seam mining
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Abstract
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Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU200820149920XU CN201288580Y (en) | 2008-10-23 | 2008-10-23 | Bottom seat structure for low coal seam mining |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU200820149920XU CN201288580Y (en) | 2008-10-23 | 2008-10-23 | Bottom seat structure for low coal seam mining |
Publications (1)
Publication Number | Publication Date |
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CN201288580Y true CN201288580Y (en) | 2009-08-12 |
Family
ID=40980260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNU200820149920XU Expired - Fee Related CN201288580Y (en) | 2008-10-23 | 2008-10-23 | Bottom seat structure for low coal seam mining |
Country Status (1)
Country | Link |
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CN (1) | CN201288580Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102877875A (en) * | 2012-09-17 | 2013-01-16 | 中煤北京煤矿机械有限责任公司 | Thin coal seam support bottom raising mechanism and thin coal seam support |
-
2008
- 2008-10-23 CN CNU200820149920XU patent/CN201288580Y/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102877875A (en) * | 2012-09-17 | 2013-01-16 | 中煤北京煤矿机械有限责任公司 | Thin coal seam support bottom raising mechanism and thin coal seam support |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
PP01 | Preservation of patent right |
Effective date of registration: 20150421 Granted publication date: 20090812 |
|
RINS | Preservation of patent right or utility model and its discharge | ||
PD01 | Discharge of preservation of patent | ||
PD01 | Discharge of preservation of patent |
Date of cancellation: 20171021 Granted publication date: 20090812 |
|
PP01 | Preservation of patent right | ||
PP01 | Preservation of patent right |
Effective date of registration: 20171021 Granted publication date: 20090812 |
|
PD01 | Discharge of preservation of patent | ||
PD01 | Discharge of preservation of patent |
Date of cancellation: 20181023 Granted publication date: 20090812 |
|
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: 20090812 Termination date: 20151023 |