US PATENT SUBCLASS 340 / 686.6
.~.~.~ Proximity or distance

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
686.1  DF  .~.~ Position responsive {9}
686.6.~.~.~ Proximity or distance

DEFINITION

Classification: 340/686.6

Proximity or distance:

(under subclass 686.1) Subject matter responsive to an object coming too close to, or moving too far away from, another object.

(1) Note. This subclass requires that two objects maintain a

predetermined maximum or minimum distance from each other.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

517, for generic transistor circuitry responsive to proximity or touch.