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7364715 As-grown single crystal of alkaline earth metal fluoride  
A single crystal of alkaline earth metal fluoride is produced by a single crystal pulling method, has a straight barrel part diameter of not less than 17 cm, preferably has a straight barrel part...
7198673 Optical lithography fluoride crystal annealing furnace  
A method of making below 250-nm UV light transmitting optical fluoride lithography crystals includes applying heat along a shortest path of conduction of a selected optical fluoride crystal,...
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