US PATENT SUBCLASS 257 / 434
.~.~.~.~ With window means

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

414  DF  RESPONSIVE TO NON-ELECTRICAL SIGNAL (E.G., CHEMICAL, STRESS, LIGHT, OR MAGNETIC FIELD SENSORS) {4}
428  DF  .~ Electromagnetic or particle radiation {2}
431  DF  .~.~ Light {15}
433  DF  .~.~.~ With housing or encapsulation {1}
434.~.~.~.~ With window means

DEFINITION

Classification: 257/434

With window means:

(under subclass 433) Subject matter with means to optically couple the light to the device through a transparent window.