| 摘要 |
1530737 Back and seat supports E LACYHULBERT 23 May 1977 [9 June 1976] 23859/76 Heading A4M A support for the back or seat of a person comprises a flat rigid rectangular board with radiused corners and having bonded to at least one face a thin layer of foamed resilient plastics covering the board edges, the covered board being contained in a closely fitting rectangular case. |
