US PATENT SUBCLASS 315 / 318
.~.~.~ Group control systems

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

312  DF  PLURAL LOAD DEVICE SYSTEMS {3}
313  DF  .~ Electric switch in the supply circuit {5}
317  DF  .~.~ Three or more controlled load device circuits {1}
318.~.~.~ Group control systems {1}
319  DF  .~.~.~.~> Four or more groups

DEFINITION

Classification: 315/318

(under subclass 317) Systems wherein the switch means is provided with at least two circuit closing positions, the circuit being completed from the source of supply to a group consisting of two or more load devices in each of the circuit closing positions, each of the groups including a load device not included by the other groups and at least one load device which is included by at least one other group.

SEE OR SEARCH THIS CLASS, SUBCLASS:

314, and indented subclass, where the system is a preselectable switching system.