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Class Information
Number: 236/26D
Name: Automatic temperature and humidity regulation > Closed fluid heaters > Pressure-operated > Pressure responsive means controls forced draft
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
5197665 Water heater Mar. 30, 1993
4677357 Furnace draft control with remote control feature Jun. 30, 1987











 
 
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