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Ring-type pulse sensor
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Patent number D632598
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Issue date Feb 15, 2011
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Chin-Yeh Hung
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D10 - Measuring, testing, or signalling instruments
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Heart pulse watch
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Patent number D507498
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Issue date Jul 19, 2005
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Chin-Yeh Hung
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D10 - Measuring, testing, or signalling instruments
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Pulse sensor
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Patent number D425808
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Issue date May 30, 2000
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Chin-Yeh Hung
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D10 - Measuring, testing, or signalling instruments
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Pulse sensor
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Patent number D424460
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Issue date May 9, 2000
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Chin-Yeh Hung
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D10 - Measuring, testing, or signalling instruments