发明名称 Locking cover for wells and underground tanks
摘要 A locking cover apparatus for an opening in the ground is disclosed. The apparatus can be retro-fitted to an existing ground opening, or can be newly constructed ground opening fitted with the apparatus of the present invention. The apparatus features a keyed lock that has a projecting portion that fits under an existing or newly constructed shroud that is installed at ground level and around the ground opening.
申请公布号 US7144189(B1) 申请公布日期 2006.12.05
申请号 US20030657543 申请日期 2003.09.08
申请人 BONGIOVANNI BRAD;FUNDERBURK SHAWN 发明人 BONGIOVANNI BRAD;FUNDERBURK SHAWN
分类号 E02D29/14 主分类号 E02D29/14
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