Window sash position maintainer
Window sash support and movement lock assembly
Window sash tilt control
Window sash tilt control
Window sash tilt control
Window shoe device
Window structure
Window structure
Window structure
Window system with locking device
Window tilt clutch system
Window tilt latch
Window tilt lock and frictional positioner shoe
Window with multi-way for opening
Window with openable casement
Window with sash capable of pivoting movement about two perpendi
Window with sliding and pivoted panes
Window, especially for installation in an inclined roof