52 / | HD | STATIC STRUCTURES (E.G., BUILDINGS) |
204.5 | DF | WINDOW OR WINDOW SASH, SILL, MULLION, OR GLAZING {13} |
204.62 | DF | .~ Attaching means securing a pane to a sash member or to another pane {7} |
204.67 | DF | .~.~ Contacting pane front and back then fastens to sash {1} |
204.68 | .~.~.~ Interconnected by intermediate member and fastener |