US PATENT SUBCLASS 65 / 135.4
.~.~.~.~ Spiral

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

17.1  DF  PROCESSES {32}
134.1  DF  .~ Fining or homogenizing molten glass {13}
135.2  DF  .~.~ By agitating {1}
135.3  DF  .~.~.~ Mechanical stirrers utilized {1}
135.4.~.~.~.~ Spiral

DEFINITION

Classification: 65/135.4

Spiral:

(under subclass 135.3) Processes wherein the mechanical stirrer is spirally configured.