US PATENT SUBCLASS 219 / 55
.~.~ Resistance weld methods

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

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
53  DF  .~ Rail bond {2}
55.~.~ Resistance weld methods

DEFINITION

Classification: 219/55

(under subclass 53) Subject matter relating to resistance welding methods.

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53, for resistance welding apparatus for making rail bonds.