OFFICE ACCESSORIES DESIGNED WITH THE OPTION OF INSTALLATION UPON A HORIZONTAL SURFACE OR A VERTICAL PANEL OR OTHER VERTICAL SURFACE -NAMELY, UTILITY COMPARTMENTS, PENCIL COMPARTMENTS, BASES FOR SORTERS, BINDER BINS, CALENDARS, MEMO TRAYS, CORRESPONDENCE TRAYS AND COMPARTMENTS, TELEPHONE AND ADDRESS BASES, AND MOUNTING SUPPORTS FOR HANGING SUCH OFFICE ACCESSORIES FROM A VERTICAL PANEL OR SURFACE; OFFICE ACCESSORIES DESIGNED FOR SUSPENSION FROM BENEATH A HORIZONTALLY-SUPPORTED SHELF ADAPTED TO ...