US PATENT SUBCLASS 148 / 689
.~.~.~ With extruding or drawing

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
559  DF  .~ Heating or cooling of solid metal {22}
688  DF  .~.~ Aluminum(Al) or aluminum base alloy {5}
689.~.~.~ With extruding or drawing {1}
690  DF  .~.~.~.~> And ageing, solution treating (i.e., for hardening), precipitation hardening or strengthening

DEFINITION

Classification: 148/689

With extruding or drawing:

(under subclass 688) Process wherein the metal is extruded or drawn through a shaping orifice for purpose of shaping the metal.