US PATENT SUBCLASS 425 / 203
.~ With separate and distinct gas withdrawal chamber

Current as of: June, 1999
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425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

200  DF  WITH SEPARATE AND DISTINCT UPSTREAM AGITATING OR KNEADING MEANS {8}
203.~ With separate and distinct gas withdrawal chamber

DEFINITION

Classification: 425/203

(under subclass 200) Apparatus wherein the mixing means is located in a section or area designed for gas withdrawal.

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4, for mechanical means to cause a gas to be entrained in the stock material.