发明名称 DOUBLE WALLED CORRUGATED PIPE SECTION WITH PIPE COUPLING
摘要 A corrugated double wall plastic pipe with a bell connector at one end of the pipe section and an insert connector at the opposite end of the pipe. The insert connector includes an inner wall that cooperates with the bell connector at the junction of the bell connector and the pipe to continue to the inner wall between pipes joined by an insert connector of one pipe inserted in the bell connector of a second pipe.
申请公布号 CA2621322(C) 申请公布日期 2014.12.16
申请号 CA20082621322 申请日期 2008.02.14
申请人 LUPKE, MANFRED A. A.;LUPKE, STEFAN A. 发明人 LUPKE, MANFRED A. A.;LUPKE, STEFAN A.
分类号 F16L9/133;F16L25/00;F16L47/08 主分类号 F16L9/133
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