Dominic R. Protano - Grafton MA Ronald L. Conte - Grafton MA
International Classification:
E04H 316 E03B 1100
US Classification:
417217
Abstract:
Apparatus for use with a swimming pool having a drain opening on a vertical surface, the apparatus consisting of an open-topped, open-sided enclosure with edges which engage the surface around the drain and with a pump on the interior for removing water.