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Zone damper
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Patent number D743521
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Issue date Nov 17, 2015
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Controlled Holdings, LLC
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Ronald E. Jackson
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D23 - Environmental heating and cooling
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Door security device
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Patent number D376747
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Issue date Dec 24, 1996
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Ronald E. Jackson
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D08 - Tools and hardware
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Adjustable spring clamp
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Patent number 5,381,989
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Issue date Jan 17, 1995
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Ronald E. Jackson
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Audible security alarm
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Patent number D347596
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Issue date Jun 7, 1994
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Ronald E. Jackson
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D10 - Measuring, testing, or signalling instruments
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Adjustable clamp
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Patent number 4,943,039
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Issue date Jul 24, 1990
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Ronald E. Jackson
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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HVAC zone control system
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Patent number 4,886,110
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Issue date Dec 12, 1989
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Valera Electronics Inc.
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Ronald E. Jackson
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F24 - HEATING RANGES VENTILATING