US PATENT SUBCLASS 237 / 69
HEATED FLOOR
Current as of: June, 1999
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DEFINITION
Classification: 237/69
(under the class definition) Heating systems in which the room is heated by heated fluid circulated within or beneath or caused to contact with the underside of a floor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
43, for the heating of vehicle floors.
SEE OR SEARCH CLASS
454, Ventilation,
185+, for hollow walls and floors having vents for passage of air.
