Bill Stephens started at Knoll as an assistant prototype builder after his graduation from the Philadelphia Museum School of Art. He first tried to make a cane chair on a minimal frame without success. He then changed the seat to a plastic shell that, when connected to the frame, formed a total structure; with this design innovation, the 1305U chair was born. It was originally designed for installation at the Yale School of Architecture student center.Knoll bent wood side armchairDesigned by Bill StephensDate of design: 1970Date of manufacture: 1972-1988Model number: 1305UMaterials: Laminated oak frame with an upholstered molded plastic shellAge appropriate wear. Reupholstery recommended.Multiple chairs availableWe can refinish in an ebonized frame and upholster for an additional fee. See example. Measures: Width 23" x depth 22" x height 31.5"Seat height 18" arm height 25.5".