CN209293834U - 一种煤矿用开采掘进掩护支架 - Google Patents
一种煤矿用开采掘进掩护支架 Download PDFInfo
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- CN209293834U CN209293834U CN201821992212.2U CN201821992212U CN209293834U CN 209293834 U CN209293834 U CN 209293834U CN 201821992212 U CN201821992212 U CN 201821992212U CN 209293834 U CN209293834 U CN 209293834U
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- strut
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- coal mine
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CN201821992212.2U CN209293834U (zh) | 2018-11-29 | 2018-11-29 | 一种煤矿用开采掘进掩护支架 |
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CN201821992212.2U CN209293834U (zh) | 2018-11-29 | 2018-11-29 | 一种煤矿用开采掘进掩护支架 |
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CN209293834U true CN209293834U (zh) | 2019-08-23 |
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CN201821992212.2U Expired - Fee Related CN209293834U (zh) | 2018-11-29 | 2018-11-29 | 一种煤矿用开采掘进掩护支架 |
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CN (1) | CN209293834U (zh) |
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2018
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Mining drivage shielding support for coal mine Effective date of registration: 20191029 Granted publication date: 20190823 Pledgee: Agricultural Bank of China Limited Suzhou Branch Pledgor: WANBEI COAL-ELECTRICITY GROUP CO., LTD. Registration number: Y2019340000157 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210601 Granted publication date: 20190823 Pledgee: Agricultural Bank of China Limited Suzhou Branch Pledgor: WANBEI COAL-ELECTRICITY GROUP Co.,Ltd. Registration number: Y2019340000157 |
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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: 20190823 Termination date: 20201129 |