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Control and data system
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Patent number 4,033,883
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Issue date Jul 5, 1977
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Dresser Industries, Inc.
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Herbert G. Zinsmeyer
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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Level sensor
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Patent number 3,935,741
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Issue date Feb 3, 1976
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Dresser Industries, Inc.
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Herbert G. Zinsmeyer
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G01 - MEASURING TESTING