US PATENT SUBCLASS 237 / 12.5
.~.~ Smoke

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

Internet Version by PATENTEC © 1999      Terms of Use


237 /   HD   HEATING SYSTEMS

12.1  DF  HEAT AND POWER PLANTS {3}
12.4  DF  .~ Car {3}
12.5.~.~ Smoke

DEFINITION

Classification: 237/12.5

(under subclass 12.4) Heating systems in which the car or train is heated directly by the furnace gases from the power plant.