发明名称 Swimming pool step guard
摘要 A swimming pool step guard having resilient means to adjust the length thereof is engaged at its upper end by a pool edge adjacent the pool stair well and engages the bottom of the pool at its lower end to thereby block entrance into the stairwell of a pool sweeper.
申请公布号 US4856124(A) 申请公布日期 1989.08.15
申请号 US19880153415 申请日期 1988.02.08
申请人 MCJUNKIN, CLAUDE L. 发明人 MCJUNKIN, CLAUDE L.
分类号 E04H4/14 主分类号 E04H4/14
代理机构 代理人
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