C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 37/012 (2006.01) C03B 29/02 (2006.01) C03B 37/014 (2006.01)
Patent
CA 2071693
A glass preform is preheated and then subjected to flame abrasion by an oxyhydrogen flame. The surface of the glass preform thus abrased had no cracks during the cooling after the flame abrasion.
Danzuka Toshio
Ohga Yuichi
Kirby Eades Gale Baker
Sumitomo Electric Industries Ltd.
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