US PATENT SUBCLASS 148 / 504
.~.~.~ With working step


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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}
500  DF  .~ Utilizing disclosed mathematical formula or relationship {3}
503  DF  .~.~ Utilizing therein symbol for temperature {1}
504.~.~.~ With working step


DEFINITION

Classification: 148/504

With working step:

(under subclass 503) Process which includes a working step.