US PATENT SUBCLASS 219 / 136
.~.~ Welding

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}
136.~.~ Welding {1}
137 R  DF  .~.~.~> Process {2}

DEFINITION

Classification: 219/136

(under subclass 121) Subject matter relating to welding.

SEE OR SEARCH THIS CLASS, SUBCLASS:

129, for similar subject matter utilized for soldering.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

615+, for composite metallic stock comprising welded joints characterized by the composition of the parts joined and/or the filler metal.