US PATENT SUBCLASS 219 / 130.4
.~.~.~ With arc ignition and stabilization arrangements

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  DF  .~.~ Including arc-power supplies {5}
130.4.~.~.~ With arc ignition and stabilization arrangements

DEFINITION

Classification: 219/130.4

With arc ignition and stabilization arrangements:

(under subclass 130.1) Subject matter including circuit means to initiate and maintain an electric welding arc.