US PATENT SUBCLASS 356 / 226
.~.~ Detector and indicator electrical coupling (e.g., amplifying or attenuating)

Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

213  DF  PHOTOMETERS {9}
218  DF  .~ Photoelectric {9}
226.~.~ Detector and indicator electrical coupling (e.g., amplifying or attenuating)

DEFINITION

Classification: 356/226

(under subclass 218) Subject matter including some details of the electrical coupling or connection between the light responsive device and the meter or indicating device.

(1) Note. Examples of such coupling or connection are amplifiers, attenuators, and electrical connectors.

SEE OR SEARCH CLASS

340, Communications: Electrical,

600, for electrical signalling systems, generally, which are responsive to light, such as vision tones to aid the blind.