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Electric toothbrush
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Patent number D1072490
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Issue date Apr 29, 2025
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Zhengzhou Wanmayun Electronic Technology CO., Ltd.
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Xian-Wei Song
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D04 - Brushware
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Positioning label device
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Patent number D1071758
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Issue date Apr 22, 2025
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Zhengzhou Wanmayun Electronic Technology CO., Ltd.
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Ting-Kang Ou
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D10 - Measuring, testing, or signalling instruments
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Indoor positioning base station
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Patent number D984445
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Issue date Apr 25, 2023
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Zhengzhou Wanmayun Electronic Technology CO., Ltd.
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Ting-Kang Ou
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D14 - Recording, communication, or information retrieval equipment
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