9623 ⎘
Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats; Chairs or stools with vertically-adjustable seats with flexible height-adjusting means, e.g. rope, chain
SEAT ADJUSTMENT MODULE, SEAT FRAME, AND SEAT
Hidden adjustable seat tube device for bicycle
Apparatus and method for furniture with adjustable platform height and membrane sidewalls