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2012
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Invention
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Under-thread supply device for sewing machine. The present invention relates to an under-thread s... |
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Invention
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Lower thread bobbin for sewing machine. The present invention relates to a lower thread bobbin fo... |
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Invention
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Shuttle case fixing device. The present invention relates to a shuttle case fixing device for fix... |
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Invention
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Bobbin cover case allowing high-speed back-stitching. The present invention relates to a bobbin c... |
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Invention
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Shuttle case allowing back-stitching for extended time. The present invention relates to a shuttl... |
