| 摘要 |
<p>This sign board is of the type in which display elements can be changed from time to time. The board comprises the three following laminations: a continuous backing, a spacer lamination adhering to one face of the backing and defining a series of pocket-forming cutouts, each having an access opening along one side; and a facing sheet lamination adhered to the spacer lamination and forming a series of windows, each opposite a pocket, each window of a smaller size than that of the associated pocket. For each pocket, there are provided a stack of individual display sheets, all of the same size, conforming to the size of the associated pocket and each stack insertable and removable in its associated pocket through said access opening. The foremost display sheet of the stack is visible through the window, while the other display sheets of the stack are hidden from view. All the display sheets of one stack are interchangeable. A locking strip is preferably provided to lock the display sheets in their respective pockets.</p> |
