Underground self-excitation type liquid drainage and gas recovery device (Chinese)
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- New search for: WANG YUFENG
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2020
- Patent / Electronic Resource
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Title:Underground self-excitation type liquid drainage and gas recovery device
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Additional title:一种井下自励式排液采气装置
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Patent number:CN111101907
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Patent applicant:
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Patent family:
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Contributors:WANG YUFENG ( author ) / HANG JIANCHUN ( author ) / HU XIAOHUI ( author ) / SHI XIAODIAO ( author ) / ZHANG YI ( author ) / HUANG HAI'OU ( author )
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Publisher:
- New search for: Europäisches Patentamt
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Publication date:2020-05-05
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Type of media:Patent
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Type of material:Electronic Resource
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Language:Chinese
- New search for: E21B / F04B
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Classification:
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