75107272
May 21, 1996
electric robots for cleaning swimming pools and ponds, pumps for dispensing metered doses of water purification chemicals in swimming pools and ponds, oxygen and chlorine level monitors for swimming pools and ponds
Electrical and Scientific Apparatuswater filtering units, water purification units, water treatment units, chlorinating units, oxygenating units, and ozoning units for ponds and swimming pools; cartridges and filters being parts of water filtering units for swimming pools and ponds; plumbing valves for use in swimming pools and ponds; water fountains and decorative water fountains, and spas
Environmental Control Apparatus