Torches and methods of using them
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United States of America Patent
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Jun 20, 2017
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app pub date -
Feb 12, 2016
filing date -
Jul 13, 2012
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Abstract
Certain embodiments described herein are directed to a torch that includes a suitable amount of a refractory material. In some embodiments, the torch can include one or more non-refractory materials in combination with a refractory material. In some embodiments, the torch can comprise a refractory material and an optically transparent window. In other embodiments, the torch can comprise a material comprising a melting point higher than the melting point of quartz.
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