| http://www.w3.org/ns/prov#value | - FIELD OF THE INVENTIONThe present invention relates to heating apparatus and, in particular, to an electrical heating apparatus for heating air for such uses as maintaining or increasing the temperature of the water in a tub, spa, or small pool or a raft floating in a pool, pond or stream, for space heating, for warming and/or drying towels and other articles, for hair drying and for drying animal
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