US PATENT SUBCLASS 219 / 146.52
.~.~.~ Shielding

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

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
146.1  DF  .~ Weld rod composition {6}
146.31  DF  .~.~ Particulate {3}
146.52.~.~.~ Shielding

DEFINITION

Classification: 219/146.52

Shielding:

(under subclass 146.31) Subject matter including materials which decompose to provide protection to the weld site from atmospheric contamination.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73.2, for this subject matter.

SEE OR SEARCH CLASS

148, Metal Treatment,

23+, for fluxing compositions, per se.

252, Compositions, 500+, for arc shielding compositions.

501, Compositions: Ceramic,

28, for glass batch forming compositions containing slag.