US PATENT SUBCLASS 454 / 68
ELEVATOR


Current as of: June, 1999
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454 /   HD   VENTILATION

68ELEVATOR


DEFINITION

Classification: 454/68

ELEVATOR:

(under the class definition) Subject matter comprising features peculiar to admitting air to, exhausting air from, or circulating air about a (ventilated) space in a device vertically raised and lowered to transport passengers, goods, or equipment.

SEE OR SEARCH CLASS

187, Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle, appropriate subclasses for particular elevator structure.