1940s Jens Risom Model 37 loveseat sofa for Knoll in charcoal grey upholstery atop tapered stained birch legs, a class Midcentury Modern design. The high back features a row of button tufting. Seat Depth: 20" Arm Height: 25" The first true Knoll designer, Jens Risom (1916–2016) joined the young Hans Knoll Furniture Company in the early 1940s as the sole designer of interiors and furniture after moving to the United States from Denmark.