| 摘要 |
<p>1499079 Chairs W FEHLBAUM 8 June 1976 23723/76 Headings A4J and A4U A chair comprises a backrest 2 connected to a seat rest 1 by a corrugation 3 and a shoulder 4 connected to the backrest by a further corrugation 5 about which the shoulder rest can be tilted, flexing of the backrest below a level A being prevented by stiffening ribs 12 which taper above the level A to allow the backrest to flex above the level A.</p> |
