| 摘要 |
<p>848,511. Floor mats. LONZA ELECTRIC & CHEMICAL WORKS Ltd. June 23, 1958 [June 21, 1957], No. 20066/58. Class 142(4). [Also in Group VIII] A resilient gymnastic mat comprises a thick sheet 1 of closed-cell cellular thermoplastic synthetic resin having grooves 2 in one or both surfaces, and a thin perforated sheet 3 of thermoplastic synthetic resin secured by adhesive to one or each grooved surface. The resin may be polyvinyl chloride, or a copolymer of vinyl chloride with vinyl acetate, vinylidene chloride, acrylonitrile or an ester of acrylic or methacrylic acid, and may contain a plasticiser..</p> |
