US PATENT SUBCLASS 454 / 2
.~ Vehicle

Current as of: June, 1999
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454 /   HD   VENTILATION

1  DF  CHIMNEY OR STACK {6}
2.~ Vehicle

DEFINITION

Classification: 454/2

Vehicle:

(under subclass 1) Subject matter wherein the ventilated space is in a device for transporting passengers, goods, or equipment.

(1) Note. This subclass provides a residual location for vehicle chimney or stack structure not properly classified in other classes.

SEE OR SEARCH CLASS

110, Furnaces,

184, for a metal smokestack combined with particular solid material combustion apparatus in a locomotive or portable boiler.

114, Ships,

187, for steamboat stacks or chimneys adapted for use on vessels and having particular ship structure.