发明名称 HEADWALL FOR DRAIN PIPE
摘要 A sectional headwall for a drain pipe includes a unitary base member, at least one unitary sectional member positioned on the base member and a unitary lid member positioned on the at least one sectional member. The unitary base member defines an opening extending therethrough and includes two longitudinally extending walls and two end walls. The base member further includes a sleeve extending between the longitudinal walls that defines an aperture extending through the longitudinal walls for receiving the drain pipe. The sectional member defines an opening therethrough cooperating with the opening defined by the base member.
申请公布号 EP1123444(A4) 申请公布日期 2004.04.21
申请号 EP19990970703 申请日期 1999.10.18
申请人 HARTMAN EW, INC. 发明人 HARTMAN, HENRY B.
分类号 E01F5/00;E01F9/619 主分类号 E01F5/00
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