US PATENT SUBCLASS 117 / 920
SINGLE-CRYSTALS HAVING A HOLLOW (E.G., TUBE, CONCAVO-CONVEX) {C30B 29/66}

Current as of: June, 1999
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117 /   HD   SINGLE-CRYSTAL, ORIENTED-CRYSTAL, AND EPITAXY GROWTH PROCESSES; NON-COATING APPARATUS THEREFOR

920SINGLE-CRYSTALS HAVING A HOLLOW (E.G., TUBE, CONCAVO-CONVEX) {C30B 29/66}

DEFINITION

Classification: 117/920

SINGLE-CRYSTALS HAVING A HOLLOW (E.G., TUBE, CONCAVO-CONVEX) [C30B 29/66]:

(under the class definition) A collection of art which discloses growing single-crystal* having a hollow such as a tube.

(1) Note. A complete search would include subclasses 25 and 210. Cross-referencing therewith is precluded as unnecessarily duplicative.