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Gate valve for vacuum processing system
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Patent number 5,379,984
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Issue date Jan 10, 1995
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Intevac, Inc.
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George L. Coad
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Cyclic dwell engine
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Patent number 4,589,380
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Issue date May 20, 1986
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Avalon Research
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George L. Coad
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Cyclic dwell engine
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Patent number 4,491,095
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Issue date Jan 1, 1985
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Avalon Research
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George L. Coad
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS