US PATENT SUBCLASS 72 / 31.13
.~ Work drawn or extruded through die

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

31.01  DF  WITH INDICATION OF CONDITION OR POSITION OF WORK, PRODUCT, OR MACHINE ELEMENT (E.G., BROKEN TOOL ALARM, ETC.) {6}
31.13.~ Work drawn or extruded through die

DEFINITION

Classification: 72/31.13

Work drawn or extruded through die:

(under subclass 31.01) Subject matter wherein the work is pulled or pushed through a closed die*.