Sofa-bed

1. Sofa-bed

1 . 1 : Top perspective view

1 . 2 : Front

1 . 3 : Rear view

1 . 4 : Top

1 . 5 : Bottom

1 . 6 : Right-side view

1 . 7 : Left-side view

1 . 8 : Top perspective view

1 . 9 : Top

1 . 10 : Left-side exploded view

1 . 11 : Cross-sectional view taken along line 11 - 11 in 1 . 9

1 . 12 : Top perspective view

1 . 13 : Front

1 . 14 : Rear view

1 . 15 : Top

1 . 16 : Bottom

1 . 17 : Right-side view

1 . 18 : Left-side view

The design consists of the visual features of the article as shown in the accompanying drawings; the article comprises a three-seat sofa that can be configured into retracted, semi-extended/retracted, and/or extended states; the parts shown by means of broken lines in the drawings are not part of the claimed design; the three-seat sofa is shown in the retracted state in FIGS. 1 . 1 to 1 . 7 , in the semi-retracted state in FIGS. 1 . 8 to 1 . 11 , and in the extended state in FIGS. 1 . 12 to 1 . 18 .