CN201090843Y - 煤矿井下用大口径瓦斯管 - Google Patents
煤矿井下用大口径瓦斯管 Download PDFInfo
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- CN201090843Y CN201090843Y CNU200720029018XU CN200720029018U CN201090843Y CN 201090843 Y CN201090843 Y CN 201090843Y CN U200720029018X U CNU200720029018X U CN U200720029018XU CN 200720029018 U CN200720029018 U CN 200720029018U CN 201090843 Y CN201090843 Y CN 201090843Y
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- retardant
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNU200720029018XU CN201090843Y (zh) | 2007-10-13 | 2007-10-13 | 煤矿井下用大口径瓦斯管 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CNU200720029018XU CN201090843Y (zh) | 2007-10-13 | 2007-10-13 | 煤矿井下用大口径瓦斯管 |
Publications (1)
Publication Number | Publication Date |
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CN201090843Y true CN201090843Y (zh) | 2008-07-23 |
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CNU200720029018XU Expired - Fee Related CN201090843Y (zh) | 2007-10-13 | 2007-10-13 | 煤矿井下用大口径瓦斯管 |
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CN (1) | CN201090843Y (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102720898A (zh) * | 2012-07-02 | 2012-10-10 | 江苏京元节能环保有限公司 | 一种煤矿井下用聚乙烯护套聚氨酯保温钢管制备工艺 |
CN114087009A (zh) * | 2021-11-22 | 2022-02-25 | 吕梁学院 | 一种煤矿瓦斯防治用双螺旋通风装置及其使用方法 |
-
2007
- 2007-10-13 CN CNU200720029018XU patent/CN201090843Y/zh not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102720898A (zh) * | 2012-07-02 | 2012-10-10 | 江苏京元节能环保有限公司 | 一种煤矿井下用聚乙烯护套聚氨酯保温钢管制备工艺 |
CN102720898B (zh) * | 2012-07-02 | 2015-04-22 | 江苏京元节能环保有限公司 | 一种煤矿井下用聚乙烯护套聚氨酯保温钢管制备工艺 |
CN114087009A (zh) * | 2021-11-22 | 2022-02-25 | 吕梁学院 | 一种煤矿瓦斯防治用双螺旋通风装置及其使用方法 |
CN114087009B (zh) * | 2021-11-22 | 2023-10-24 | 吕梁学院 | 一种煤矿瓦斯防治用双螺旋通风装置及其使用方法 |
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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: Tianjin Shengxiang Plastic Pipe Industry Co., Ltd. Assignor: Zhang Zijin Contract fulfillment period: 2009.4.12 to 2017.10.12 Contract record no.: 2009120000100 Denomination of utility model: Heavy caliber gas pipe for coal mine downhole Granted publication date: 20080723 License type: Exclusive license Record date: 20090709 |
|
LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.4.12 TO 2017.10.12; CHANGE OF CONTRACT Name of requester: TIANJIN SHENG XIANG PLASTIC PIPE INDUSTRY CO., LTD Effective date: 20090709 |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20151013 |
|
EXPY | Termination of patent right or utility model |