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Melting and vaporizing apparatus and method

Image Number 4 for United States Patent #7214903.

An apparatus and method for heating materials or substances in an oven at an oven temperature below their melting and/or vaporization points to either melt and/or vaporize the substance. Substances are inserted into a substantially spherical envelope. The envelope is sealed at a preset pressure. The solid is heated in an oven at an oven temperature substantially below the melting or vaporization temperature of the substance at the preset pressure for a time sufficient to either melt or vaporize the substance.

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