US PATENT SUBCLASS 65 / 428
.~.~.~ Collapsing tube


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



65 /   HD   GLASS MANUFACTURING

376  DF  PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18}
385  DF  .~ Process of manufacturing optical fibers, waveguides, or preforms thereof {29}
427  DF  .~.~ Consolidating preform (e.g., sintering, etc.) {1}
428.~.~.~ Collapsing tube


DEFINITION

Classification: 65/428

Collapsing tube:

(under subclass 427) Processes including a step causing an innermost surface of a tube to cave in upon itself.