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2024
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Invention
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Board game tool for arithmetic games using octagonal operation symbols. The present invention pro... |
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Invention
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Method for operating calculation game using octagonal calculation symbols, and computer program t... |
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2023
|
Invention
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System for notifying of get-off place and empty seat of public transportation. A system for notif... |
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Invention
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Work evaluation method and device. A work evaluation method and device are disclosed. The present... |
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2022
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Invention
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Coingrid game control method and computer program for same. Provided are a CoinGrid game control ... |
