Spa heater system and methods for controlling
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United States of America Patent
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Jun 26, 2007
Grant Date -
Jun 1, 2006
app pub date -
Dec 1, 2004
filing date -
Dec 1, 2004
priority date (Note) -
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Abstract
A spa system comprises an electrically powered heater. The electrically powered heater comprises a heating element capable of drawing a rated current when switched on to an AC line voltage. An electronic control system is programmed to control the heating element to draw less than the rated current.
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Cited Art Landscape
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