US PATENT SUBCLASS 249 / 84
.~ Preform functions as partition means

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249 /   HD   STATIC MOLDS

83  DF  UNITING PREFORM WITH MOLDING MATERIAL {9}
84.~ Preform functions as partition means

DEFINITION

Classification: 249/84

(under subclass 83) Apparatus having a preform which functions as a partition between fluent hardenable materials.