US PATENT SUBCLASS 219 / 130.1
.~.~ Including arc-power supplies

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

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
121.11  DF  .~ By arc {16}
130.1.~.~ Including arc-power supplies {5}
130.21  DF  .~.~.~> With automatic output control (e.g., shortcircuit, infrared) {3}
130.4  DF  .~.~.~> With arc ignition and stabilization arrangements
130.5  DF  .~.~.~> With predetermined time variation of arc voltage or current (e.g., programmed) {1}
132  DF  .~.~.~> Remote control
133  DF  .~.~.~> With generator (e.g., gas engine driven) {1}

DEFINITION

Classification: 219/130.1

Including arc-power supplies:

(under subclass 121) Subject matter including circuit means for providing electrical energy for arc welding.

SEE OR SEARCH THIS CLASS, SUBCLASS:

69+, for electric arc machining.

108+, for resistance welding power supplies.