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Flow meter
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Patent number 4,986,133
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Issue date Jan 22, 1991
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Lake Monitors, Inc.
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Jack E. Lake
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G01 - MEASURING TESTING
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Fluid flow meter
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Patent number 4,389,901
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Issue date Jun 28, 1983
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Racine Federated Inc.
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Jack E. Lake
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G01 - MEASURING TESTING
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Fluid flow device
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Patent number 4,349,711
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Issue date Sep 14, 1982
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Racine Federated, Inc.
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Jack E. Lake
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G01 - MEASURING TESTING