发明名称 FOOTING TILE FOR TRANSVERSE FLOW OF SEEPAGE
摘要 A transverse tile, preferably of molded material, to be embedded transversely in the concrete of a foundation footing to convey seepage water from an exterior drain tile to an inner drain tile. A means is included to subsequently provide a drain opening in the panel of the transverse tile after the mason work has been done, for the purpose of allowing seepage to flow into the tile.
申请公布号 US3668829(A) 申请公布日期 1972.06.13
申请号 USD3668829 申请日期 1970.03.16
申请人 MELVIN J. NELSON 发明人 MELVIN J. NELSON
分类号 E02B11/00;(IPC1-7):E02D31/02 主分类号 E02B11/00
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