Light source
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United States of America Patent
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app pub date -
Aug 18, 2005
filing date -
Feb 20, 2003
priority date (Note) -
Abandoned
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Abstract
A light source having a heatable filament 1 or an electrode, with the filament 1 or electrode being arranged in a bulb or tube 2. The bulb or tube 2 comprises an inner surface 3 and an outer surface 4, and to extend the service life of the light source, an agent 7 is arranged in the bulb or tube for removing contaminants and/or deposits 8 from the inner surface 3.
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