US PATENT SUBCLASS 148 / 211
.~.~.~ With working, machining, or cutting

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}
206  DF  .~ Carburizing or nitriding using externally supplied carbon or nitrogen source {15}
210  DF  .~.~ Of selected surface area (e.g., zone, top only, etc.) {3}
211.~.~.~ With working, machining, or cutting

DEFINITION

Classification: 148/211

With working, machining, or cutting:

(under subclass 210) Process which includes a step of deforming a solid metal or mechanically cutting or grinding away of portions of a solid metal to produce a desired shape or form.