US PATENT SUBCLASS 219 / 69.13
.~.~.~ Circuits

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
68  DF  .~ Cutting or disintegrating (e.g., machining engraving) {2}
69.11  DF  .~.~ Electric spark machining {10}
69.13.~.~.~ Circuits

DEFINITION

Classification: 219/69.13

Circuits:

(under subclass 69.11) Subject matter utilizing an electrical circuit specially adapted for cutting or gouging.

(1) Note. The electrical circuit may, for example, be the power supply or a control circuit.

SEE OR SEARCH CLASS

320, Electricity: Battery or Capacitor Charging or Discharging,

166+, for capacitor charging or discharging.

364, Electrical Computers and Data Processing Systems,

474, and 475 for machining using a numeric controller.