US PATENT SUBCLASS 65 / 494
.~ With means to form hollow fiber or preform

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

483  DF  FIBER MAKING APPARATUS {21}
494.~ With means to form hollow fiber or preform

DEFINITION

Classification: 65/494

With means to form hollow fiber or preform:

(under subclass 483) Apparatus having means to produce a fiber or preform with an empty core or cavity.