Derniers inventions, produits et services
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2018
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Invention
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Pen case |
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Invention
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Self-standing housing body. The present invention proposes a self-standing housing body solving a... |
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Invention
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Freestanding pen case. The present invention provides a freestanding pen case which resolves vari... |
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2017
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Invention
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Pencil sharpener. The present invention provides a sharpening completion detection mechanism that... |
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Invention
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Pencil sharpener. The present invention provides a completion-of-sharpening detecting mechanism t... |
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