US PATENT SUBCLASS 126 / 531
.~.~ Hollow side walls in heat exchanger

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

Internet Version by PATENTEC © 1999      Terms of Use


126 /   HD   STOVES AND FURNACES

500  DF  FIREPLACES OR ACCESSORIES {19}
523  DF  .~ With heat exchanger for room heating air {7}
531.~.~ Hollow side walls in heat exchanger

DEFINITION

Classification: 126/531

Hollow side walls in heat exchanger:

(under subclass 523) Subject matter wherein said structure includes spaced apart plates along each side of the flame, and said spaced apart plates define a flow path for air along opposite sides of the flame.