US PATENT SUBCLASS 65 / 485
.~.~ By optical means or of optical property


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

483  DF  FIBER MAKING APPARATUS {21}
484  DF  .~ With measuring, controlling, sensing, timing, inspecting, indicating, or testing means {7}
485.~.~ By optical means or of optical property


DEFINITION

Classification: 65/485

By optical means or of optical property:

(under subclass 484) Apparatus having means for measuring, controlling, analyzing, inspecting, or testing visual characteristics or properties of light used to produce the fibers, filaments, or preforms.

(1) Note. Patents directed to means for measuring, controlling, analyzing, inspecting, or testing divergence, convergence, or internal reflection of light rays passing through fibers or fiber preforms are included in this subclass.