CN215978779U - 一种煤矿开采区用防护围栏 - Google Patents
一种煤矿开采区用防护围栏 Download PDFInfo
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- CN215978779U CN215978779U CN202121008281.7U CN202121008281U CN215978779U CN 215978779 U CN215978779 U CN 215978779U CN 202121008281 U CN202121008281 U CN 202121008281U CN 215978779 U CN215978779 U CN 215978779U
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- 230000001681 protective effect Effects 0.000 title claims abstract description 32
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 238000005065 mining Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000007599 discharging Methods 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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CN202121008281.7U CN215978779U (zh) | 2021-05-12 | 2021-05-12 | 一种煤矿开采区用防护围栏 |
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CN202121008281.7U CN215978779U (zh) | 2021-05-12 | 2021-05-12 | 一种煤矿开采区用防护围栏 |
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CN215978779U true CN215978779U (zh) | 2022-03-08 |
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CN202121008281.7U Expired - Fee Related CN215978779U (zh) | 2021-05-12 | 2021-05-12 | 一种煤矿开采区用防护围栏 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CB03 | Change of inventor or designer information |
Inventor after: Liu Xiaotao Inventor after: Li Caihua Inventor before: Li Caihua |
|
CB03 | Change of inventor or designer information | ||
TR01 | Transfer of patent right |
Effective date of registration: 20220804 Address after: No. 7, South Gate Outside, Gaojiabao Town, Shenmu County, Yulin City, Shaanxi Province 719301 Patentee after: Liu Xiaotao Address before: 510000 No. 22, Baishan East Road, Baiyun District, Guangzhou, Guangdong Patentee before: Li Caihua |
|
TR01 | Transfer of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |
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CF01 | Termination of patent right due to non-payment of annual fee |