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Portable water tester with cap
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Patent number D608670
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Issue date Jan 26, 2010
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HM Digital, Inc.
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Robert L. Samborn
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D10 - Measuring, testing, or signalling instruments
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Flow switch
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Patent number D604805
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Issue date Nov 24, 2009
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HM Digital, Inc.
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Rob Samborn
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D23 - Environmental heating and cooling
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Portable water tester with cap
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Patent number D602384
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Issue date Oct 20, 2009
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HM Digital, Inc.
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Rob Samborn
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D10 - Measuring, testing, or signalling instruments