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Micro weighing system
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Patent number 5,143,166
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Issue date Sep 1, 1992
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Richard M. Hough
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G01 - MEASURING TESTING
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Liquid weigh system
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Patent number 5,143,165
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Issue date Sep 1, 1992
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Hough International, Inc.
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Richard M. Hough
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G01 - MEASURING TESTING
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Micro weighing system
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Patent number 5,127,483
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Issue date Jul 7, 1992
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Hough International, Inc.
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Richard M. Hough
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G01 - MEASURING TESTING