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Class Information
Number: 4/221
Name: Baths, closets, sinks, and spittoons > Ventilation > Sewer > Burner
Description: The sewer gases are conducted to a furnace or to a fluid-fuel burner.

Patents under this class:

Patent Number Title Of Patent Date Issued
5214266 Electric heating rod attachment insertable into roof exhaust end of sewer vent pipe to prevent clogging from ice or snow accumulation May. 25, 1993
4200940 Toilet seat volatile gas incinerator May. 6, 1980

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