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2017
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Invention
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Energy regeneration system for building. Disclosed is an energy regeneration system for a buildin... |
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Invention
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Heating efficiency improving apparatus. A heating efficiency improving apparatus is disclosed. Th... |
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2015
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Invention
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Feeding bottle structure. A feeding bottle structure is disclosed. The present invention comprise... |
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Invention
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Power generation apparatus using head of wastewater in building.
A power generation apparatus us... |
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Invention
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Power generation apparatus using head of wastewater in building. Disclosed is a power generation ... |
