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2022
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Invention
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Thrust enhancing device. The present invention relates to a thrust enhancing device. The thrust e... |
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Invention
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Venturi-type composite nozzle device for suctioning and removing air pollutants. A venturi-type c... |
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2021
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Invention
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In-building access path installation type smoke control system. The present invention relates to ... |
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Invention
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High-efficiency wet ultrafine dust and odor removal device. A high-efficiency wet ultrafine dust ... |
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Invention
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Intake-type smoke removal system. The present invention relates to an intake-type smoke removal s... |
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Invention
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Smoke and toxic gas suction removal-type firefighting nozzle device. The present invention relate... |
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Invention
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Multifunctional sprinkler device concealed in ceiling for simultaneously removing smoke and toxic... |
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Invention
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Indoor air sterilization and purification apparatus. The present invention relates to an indoor a... |
