US PATENT SUBCLASS 454 / 211
.~ Having air passage in sash


Current as of: June, 1999
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454 /   HD   VENTILATION

196  DF  MEANS COMBINED WITH WINDOW {12}
211.~ Having air passage in sash


DEFINITION

Classification: 454/211

Having air passage in sash:

(under subclass 196) Subject matter comprising a frame which directly attaches to and holds a light admitting panel (i.e., pane) of the window and wherein the frame includes a path therethrough for the air.

(1) Note. A ventilation means which contains an air duct, but which merely attaches to the frame, is not included in this subclass unless the frame itself includes an air path therethrough.

SEE OR SEARCH CLASS

49, Movable or Removable Closures,

171, for a viewing, ventilating, or packet passage within a closure.