US PATENT SUBCLASS 323 / 221
.~ Photo responsive

Current as of: June, 1999
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323 /   HD   ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS

220  DF  IN SHUNT WITH SOURCE OR LOAD {7}
221.~ Photo responsive

DEFINITION

Classification: 323/221

Photo responsive:

(under subclass 220) Subject matter wherein the final control device or an element within its control circuit is responsive to light.

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902, for optical coupling between a semiconductive device and another element.

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250, Radiant Energy,

200, 239 for photocell systems.