发明名称 Method and article of manufacture for removable pavement for underground utility placement
摘要 Removable sidewalk and a method of installation involves preformed sidewalk slabs provided with interlocking means at two opposite ends. The slabs include attachment means for lifting the slabs into place. The slabs may be installed over utility services to form a sidewalk and removed and replaced as necessary to provide access to the underground utilities.
申请公布号 US5098218(A) 申请公布日期 1992.03.24
申请号 US19900549878 申请日期 1990.07.09
申请人 BULL DOG CONSTRUCTION CO., INC. 发明人 REESE, ROBERT W.;KEECH, STEPHEN W.
分类号 E01C5/00 主分类号 E01C5/00
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