US PATENT SUBCLASS 65 / 33.9
.~.~ Forming product or preform from molten glass
Current as of:
June, 1999
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65 /
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GLASS MANUFACTURING
17.1
DF
PROCESSES
{32}
33.1
DF
.~ Devitrifying glass or vitrifying crystalline glass (e.g., starting with or forming crystalline glass, etc.) {6}
33.9
.~.~ Forming product or preform from molten glass
DEFINITION
Classification: 65/33.9
Forming product or preform from molten glass:
(under subclass 33.1) Processes wherein a vitrified or devitrified glass product or preform produced is formed
directly from molten glass.