US PATENT SUBCLASS 219 / 681
.~.~ Convection heating

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

Internet Version by PATENTEC © 1999      Terms of Use


219 /   HD   ELECTRIC HEATING

678  DF  MICROWAVE HEATING {15}
680  DF  .~ With diverse-type heating {2}
681.~.~ Convection heating {3}
682  DF  .~.~.~> Steam generating
683  DF  .~.~.~> Gas burner
684  DF  .~.~.~> Tunnel type

DEFINITION

Classification: 219/681

Convection heating:

(under subclass 680) Subject matter wherein the diverse-type heating is transferring heat to a load by a bodily movement of heated particles of matter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

400, for heat transfer by convection.

757, for an enclosed cavity structure with cooling or ventilation.

SEE OR SEARCH CLASS

126, Stoves and Furnaces,

21+, for ventilated ovens.