US PATENT SUBCLASS 327 / 514
.~ Light

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

509  DF  EXTERNAL EFFECT {5}
514.~ Light {1}
515  DF  .~.~> Elements forming an array

DEFINITION

Classification: 327/514

Light:

(under subclass 509) Subject matter wherein the external effect involves energy of optical wavelengths.

(1) Note. Secondary emissive circuits which may utilize a light sensitive cathode are classified below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

573, for a secondary emissive circuit which utilizes a light sensitive cathode.

SEE OR SEARCH CLASS

250, Radiant Energy,

200+, for circuits using photocells and see also the search notes thereunder. 257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),

431+, for a light responsive semiconducting element, per se.

359, Optics: Systems (Including Communication) and Elements, appropriate subclasses for miscellaneous optical systems and elements.