US PATENT SUBCLASS 425 / 812
VENTING

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

812VENTING

DEFINITION

Classification: 425/812

Apparatus comprising means for removing or permitting removal of gases during the molding operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

420, for press molding devices with vents.