US PATENT SUBCLASS 72 / 342.94
.~ Distinct temperature modifications at distinct locations of workpiece

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

342.1  DF  WITH TEMPERATURE MODIFICATION OF TOOL OR OF SPECIFIED PORTION OF WORK {3}
342.94.~ Distinct temperature modifications at distinct locations of workpiece {1}
342.96  DF  .~.~> By passing electric current through work

DEFINITION

Classification: 72/342.94

Distinct temperature modifications at distinct locations of workpiece:

(under subclass 342.1) Subject matter comprising provision to establish a thermal level at one portion of the material being deformed and at a different thermal level at a different portion of the material.