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Spring keyboard
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Patent number 12,308,003
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Issue date May 20, 2025
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Medeli Musical Instrument (Zhuhai) Co., Ltd.
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Xiaoxian Fan
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Power generation system
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Patent number 12,034,308
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Issue date Jul 9, 2024
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HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
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Peng Zhou
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Keybed device
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Patent number 11,114,078
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Issue date Sep 7, 2021
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Medeli Electronics (Shanghai) Co., Ltd.
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Peng Zhou
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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