US PATENT SUBCLASS 29 / 403.4
.~.~.~ By burning or heating


Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
403.1  DF  .~ Scrap recovering or utilizing {2}
403.3  DF  .~.~ Separating one material from another {1}
403.4.~.~.~ By burning or heating


DEFINITION

Classification: 29/403.4

By burning or heating:

(under subclass 403.3) Process in which the step of removing is facilitated or accomplished by combustion or by application of thermal energy.

SEE OR SEARCH CLASS

110, Furnaces,

346, for a process of incinerating solid or liquid refuse.

126, Stoves and Furnaces, for a device for heating, generally.

134, Cleaning and Liquid Contact With Solids,

19, for a process of removing foreign matter from solid materials by the application of heat or contact with hot products of combustion. 266, Metallurgical Apparatus, for means to work metal by application of heat, generally; especially

48+, for a torch used to cut metal and subclasses 200+ for means to melt or vaporize metal or means to treat liquified metal.