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Bales; David W.
Manchester, MO
No. of patents:

Patent Number Title Of Patent Date Issued
D306341 Vehicle rooftop air conditioner housing February 27, 1990
D300777 Ceiling-mounted outlet box for conditioned air April 18, 1989
D275697 Electric baseboard heater September 25, 1984
4709623 Ceiling distributor duct assembly for rooftop air conditioners December 1, 1987
A low profile ceiling duct assembly to be used with rooftop air conditioners. The unit combines an octagonal sheet metal ceiling plate which provides the upper portion of a plenum chamber; this extending into the roof space above a ceiling opening. The lower plenum portion is provide

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