US PATENT SUBCLASS 65 / 412
.~.~.~ Rod placed inside of tube

Current as of: June, 1999
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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}
406  DF  .~.~ Joining or bonding optical fibers, waveguides, or preforms (e.g., coupling, etc.) {3}
412.~.~.~ Rod placed inside of tube

DEFINITION

Classification: 65/412

Rod placed inside of tube:

(under subclass 406) Processes including a step of placing a single solid elongated optical core material inside of a hollow elongated sheathing structure.