US PATENT SUBCLASS 52 / 204.51
.~ Having a fixed pane and a movable pane

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

204.5  DF  WINDOW OR WINDOW SASH, SILL, MULLION, OR GLAZING {13}
204.51.~ Having a fixed pane and a movable pane

DEFINITION

Classification: 52/204.51

Having a fixed pane and a movable pane:

(under subclass 204.5) Window comprising a stationary portion and a displaceable portion.