发明名称 Retroreflective pavement marker.
摘要 A raised retroreflective pavement marker (10) that provides both improved retroreflectivity and longer life has a rigid opaque, synthetic resin body (12) having at its front face septa (14) to which a plastic cube-corner reflector (18) has been bonded to provide a plurality of hermetically sealed cells (16) beneath the reflector. This pavement marker differs from those on the market in that the thickness of its reflector is less than 2 mm, and it has preferably at least 500 cube-corner elements per cm<2>.
申请公布号 EP0349323(A2) 申请公布日期 1990.01.03
申请号 EP19890306626 申请日期 1989.06.29
申请人 MINNESOTA MINING AND MANUFACTURING COMPANY 发明人 MAY, DAVID C. C/O MINNESOTA MINING AND;KRECH, THOMAS D. C/O MINNESOTA MINING AND
分类号 G09F19/22;E01F9/04;E01F9/06;E01F9/08 主分类号 G09F19/22
代理机构 代理人
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