US PATENT SUBCLASS 361 / 254
.~.~ With electromagnet control means

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

247  DF  IGNITING SYSTEMS {3}
253  DF  .~ For electric spark ignition {7}
254.~.~ With electromagnet control means {1}
255  DF  .~.~.~> Including spark electrode make-break

DEFINITION

Classification: 361/254

With electromagnet control means:

(under subclass 253) Subject matter having electromagnetic means to control the igniter.

(1) Note. The electromagnet might also control the flow of gas to the igniter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

265, for electromagnet control with incandescent ignition.

SEE OR SEARCH CLASS

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

220+, for electromagnets with armatures. 336, Inductor Devices, appropriate subclasses for the structure of inductive devices.