US PATENT SUBCLASS 123 / 550
.~.~ Combustion heater


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

Internet Version by PATENTEC © 1999      Terms of Use



123 /   HD   INTERNAL-COMBUSTION ENGINES

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
543  DF  .~ Heating of combustible mixture {13}
550.~.~ Combustion heater {1}
551  DF  .~.~.~> Part of combustible mixture is burned


DEFINITION

Classification: 123/550

Combustion heater:

(under subclass 543) Subject matter in which the means for heating uses combustion of a fuel as the source of heat.