CN204239909U - 一种煤矿瓦斯抽放管道 - Google Patents
一种煤矿瓦斯抽放管道 Download PDFInfo
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- CN204239909U CN204239909U CN201420663234.XU CN201420663234U CN204239909U CN 204239909 U CN204239909 U CN 204239909U CN 201420663234 U CN201420663234 U CN 201420663234U CN 204239909 U CN204239909 U CN 204239909U
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- stiffening rib
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- gas drainage
- drainage pipeline
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CN201420663234.XU CN204239909U (zh) | 2014-11-07 | 2014-11-07 | 一种煤矿瓦斯抽放管道 |
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CN201420663234.XU CN204239909U (zh) | 2014-11-07 | 2014-11-07 | 一种煤矿瓦斯抽放管道 |
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CN204239909U true CN204239909U (zh) | 2015-04-01 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: LIAONING FENXI HUAYI INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: SU ZHONGCHAO Effective date: 20150707 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20150707 Address after: 121203 Liaoning Linghai Jincheng Jincheng east line 65 km Patentee after: Liaoning Fenxi Huayi Industrial Co., Ltd. Address before: 030008 7 stainless steel garden, TISCO, 73 Steel Road, Shanxi, Taiyuan Patentee before: Su Zhongchao |
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TR01 | Transfer of patent right |
Effective date of registration: 20200106 Address after: 030600 No. 860 North Street, Machinery Park, West Side of 108 National Road, Huitong Industrial Park, Jinzhong Development Zone, Shanxi Demonstration Zone, Jinzhong City, Shanxi Province Patentee after: Shanxi Fenxi Huayi Industrial Co., Ltd. Address before: 121203 Liaoning Linghai Jincheng Jincheng east line 65 km Patentee before: Liaoning Fenxi Huayi Industrial Co., Ltd. |
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TR01 | Transfer of patent right |