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Swimming lap counter
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Patent number 7,641,590
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Issue date Jan 5, 2010
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IDT Technology Limited
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Raymond Chan
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A63 - SPORTS GAMES AMUSEMENTS
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Weather station
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Patent number 7,417,697
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Issue date Aug 26, 2008
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IDT Technology Limited
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Raymond Chan
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G01 - MEASURING TESTING
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Weather hub
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Patent number D559711
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Issue date Jan 15, 2008
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IDT Technology Limited
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Raymond Chan
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D10 - Measuring, testing, or signalling instruments
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Clock
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Patent number D546200
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Issue date Jul 10, 2007
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IDT Technology Limited
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Raymond Chan
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D10 - Measuring, testing, or signalling instruments