US PATENT SUBCLASS 52 / 199
.~ Attic vent

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

198  DF  ENCLOSURE OR COVER, WITH SUPPLEMENTAL FLUID-GUIDING PORT BETWEEN AMBIENT AND ENCLOSED USABLE SPACE (E.G., ROOF RIDGE VENT) {1}
199.~ Attic vent

DEFINITION

Classification: 52/199

(under subclass 198) Structure in which the port is within the roof or cover of the enclosure and acts to vent the space below the roof or cover.

SEE OR SEARCH THIS CLASS, SUBCLASS:

64+, for construction with a barrier or mounted for repositioning, e.g., hinged roofs or skylights wherein the hinged roof is a movable section.

SEE OR SEARCH CLASS

454, Ventilation, appropriate subclasses, particularly

1+, and 339+ for building with air guiding or forcing means.