US PATENT SUBCLASS 40 / 465
.~.~ Photoelectric and capacity switching

Current as of: June, 1999
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40 /   HD   CARD, PICTURE, OR SIGN EXHIBITING

446  DF  CHANGING EXHIBITOR {25}
463  DF  .~ With electric circuit control {5}
465.~.~ Photoelectric and capacity switching

DEFINITION

Classification: 40/465

Photoelectric and capacity switching:

(under subclass 463) Exhibitor wherein the circuitry which causes the exhibitor to change is controlled by a light-darkness sensing switching means.