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Silt filtering device
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Patent number 10,961,687
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Issue date Mar 30, 2021
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Xiaojun Liu
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Sewage treatment device
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Patent number 10,618,829
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Issue date Apr 14, 2020
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Xiaojun Liu
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Sewage treatment device
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Patent number 10,619,339
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Issue date Apr 14, 2020
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Xiaojun Liu
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Water conserving gate
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Patent number 10,604,904
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Issue date Mar 31, 2020
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Xiaojun Liu
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Low-impact water conserving dam
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Patent number 10,415,200
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Issue date Sep 17, 2019
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Xiaojun Liu
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Sewage treatment system
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Patent number 10,384,955
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Issue date Aug 20, 2019
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Xiaojun Liu
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE