US PATENT SUBCLASS 219 / 137.41
.~.~.~.~ Having fume extractor

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}
137.2  DF  .~.~ With consumable electrode device {4}
137.31  DF  .~.~.~ Gun {7}
137.41.~.~.~.~ Having fume extractor

DEFINITION

Classification: 219/137.41

Having fume extractor:

(under subclass 137.31) Subject matter including means for the removal of gaseous material from the arc weld site.