Electrode-less incandescent bulb
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United States of America Patent
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Aug 14, 2012
Grant Date -
Sep 18, 2008
app pub date -
Dec 23, 2005
filing date -
Dec 27, 2004
priority date (Note) -
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Abstract
A method of making an electrodeless incandescent bulb comprises the steps of:
- providing a bulb tube of quartz glass,closing one end of the bulb tube,forming a neck having a bore less than the internal diameter of the bulb tube,inserting a pellet of excitable material into the bulb tube through the adjacent neck,evacuating the bulb tube through the neck andsealing the bulb.
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