| 摘要 |
916,342. Mattresses &c. BERG, L. March 8, 1960 [March 9, 1959], No. 8219/60. Classes 52 (4). A resilient supporting surface for a mattress or chair seat consists of an elastic plate 1 of rubber or polyvinyl chloride, having perforations 3 and strengthening ribs 2 around its edges, attached to a frame 7 by means of textile straps 4 passing through perforations and the ends of which are nailed to the frame at 8. A plurality of plates may be connected together by straps or hooks to form greater lengths.
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