Crucible
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United States of America Patent
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Dec 27, 2016
Grant Date -
Dec 19, 2013
app pub date -
Jun 18, 2013
filing date -
Jun 19, 2012
priority date (Note) -
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Abstract
A graphite crucible has a cylindrical body with an upper opening for receiving a sample for analysis and a disk-shaped pedestal base. The pedestal base includes a bottom surface with a centrally formed circular indentation. An inwardly projecting concave arcuate annular indentation extends between the body and pedestal base with a smoothly curved radius of curvature. The upper and lower walls of the arcuate indentation diverge outwardly at an angle of from about 56° to about 60°.
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