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Stop valve
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Patent number 4,917,355
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Issue date Apr 17, 1990
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Robert Manufacturing Company
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Richard C. G. Dark
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Unitary valve filter combustion
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Patent number 4,836,238
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Issue date Jun 6, 1989
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Robert Manufacturing Co.
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William L. Wright
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Liquid control assembly
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Patent number 4,729,400
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Issue date Mar 8, 1988
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Robert Manufacturing Company
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Benjamin D. Mendoza
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Display rack
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Patent number D247532
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Issue date Mar 21, 1978
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Robert Manufacturing Company
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Lewis N. Tenney
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D06 - Furnishings