发明名称 Set of paving stones, particularly set of concrete paving stones
摘要 A paving stone set includes a square paving-stone, a larger rectangular paving-stone and a smaller rectangular paving-stone. Each of the paving stones has generally planar top and bottom surfaces and generally planar side walls, with a clothoid shaped surface being formed on two corners of each paving-stone. The radius of curvature of each clothoid shaped surface may be different from that of the other clothoid shaped surfaces on each paving-stone. The top surface may have a different color and texture than the bottom surface. The paving-stones may be irregularly broken surfaces.
申请公布号 US4792257(A) 申请公布日期 1988.12.20
申请号 US19870095190 申请日期 1987.09.11
申请人 HANS RINNINGER U. SOHN GMBH U. CO. 发明人 RINNINGER, HANS
分类号 E01C5/06;(IPC1-7):E01C5/00 主分类号 E01C5/06
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