{HEAD ~ The use} of cryogen vapor in the blowing gas hastens {TAIL ~ cooling} and solidification of newly formed glass articles so that the time during which the articles must be retained in their molds is significantly reduced 
{ HEAD ~ The use } of cryogen vapor in the blowing gas hastens { TAIL ~ cooling } and solidification of newly formed glass articles so that the time during which the articles must be retained in their molds is significantly reduced
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