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Steam trap test station
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Patent number 5,595,211
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Issue date Jan 21, 1997
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D/A Manufacturing Co., Inc.
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Don L. Adams
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Single handle manifold
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Patent number 5,482,081
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Issue date Jan 9, 1996
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D/A Manufacturing Co. Inc.
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Don L. Adams
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Safety hard seat
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Patent number 4,585,210
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Issue date Apr 29, 1986
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Donald L. Adams
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Check valve for rod out
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Patent number 4,391,289
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Issue date Jul 5, 1983
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Donald L. Adams
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Rod out valve
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Patent number 4,192,342
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Issue date Mar 11, 1980
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Donald L. Adams
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...