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2023
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Invention
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Online learning system and method. An online learning system according to the present invention m... |
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Invention
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Multipurpose book stand. A book stand of the present invention includes a page pressing module (1... |
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2022
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Invention
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Reading stand. A reading stand according to the present invention is characterized by comprising ... |
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Invention
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Advertising method and advertising system using image captured at book holder. The present invent... |
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Invention
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E-commerce system with no wasted advertising costs. The present invention relates to an advertise... |
