US PATENT SUBCLASS 219 / 69.17
.~.~.~ Methods

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}
69.17.~.~.~ Methods

DEFINITION

Classification: 219/69.17

Methods:

(under subclass 69.11) Subject matter including a method of machining specially adapted for treating particular objects or for obtaining special results.

SEE OR SEARCH CLASS

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,

640+, for electrolytic erosion of a workpiece to change the shape or surface configuration thereof.