US PATENT SUBCLASS 315 / 319
.~.~.~.~ Four or more groups

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  DF  .~.~.~ Group control systems {1}
319.~.~.~.~ Four or more groups

DEFINITION

Classification: 315/319

(under subclass 318) Systems wherein the switch means is provided with at least four different circuit closing positions, the switch means being connected in the circuit so as to complete the circuit from the source of supply to a group of load device circuits in each of its circuit closing positions, each of the groups containing a different combination of load devices from that of each of the other groups.

SEE OR SEARCH THIS CLASS, SUBCLASS:

314, and indented subclass, where the system includes preselectable switching means.

SEE OR SEARCH CLASS

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,

1+, for visual display systems with switching means included for providing selective electrical control of the display.