LED bulb
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United States of America Patent
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Aug 6, 2013
Grant Date -
Jun 28, 2012
app pub date -
Mar 7, 2011
filing date -
Dec 27, 2010
priority date (Note) -
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Abstract
An LED bulb includes a connector for electrically connecting with a power supply, a heat sink disposed on the connector, an LED module mounted the heat sink, and an envelope secured to the heat sink and covering the LED module. The heat sink includes a tubular body, a plurality of first fins extending outwardly from an outer circumference of the tubular body, and a plurality of second fins extending inwardly from an inner circumference of the tubular body.
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