发明名称 Methods, apparatus and system for drain tiles
摘要 An improved drain tile system and methods of installation that allow superior water removal with minimal time and labor and with reduced damage to planted vegetation.
申请公布号 US2008025795(A1) 申请公布日期 2008.01.31
申请号 US20060494883 申请日期 2006.07.28
申请人 PURNELL CLIFF 发明人 PURNELL CLIFF
分类号 E02B13/00 主分类号 E02B13/00
代理机构 代理人
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