Cleaning unit for collecting debris in a swimming pool

Closed hemapheresis system and method

Closed loop liquid treatment and recycling system

Closure for roof drain

Cog rake bar screen

Collapsible catch basin grate filter assembly

Collapsible pool skimmer apparatus

Collecting device for a swimming pool

Collection container with transport pump

Combined filter and incinerator

Combined filter and skimmer assembly for ponds

Combined filtering and aerating device for an aquarium

Combined floor sink and strainer

Combined leaching and sump catch-basin

Combined oil filter and cooler

Combined sewer overflow and storm water diverter screen

Compact aquarium filter

Compact contact lens purification system using ozone generator

Compact filtering unit for a swimming pool basin

Compact filtration unit for swimming pool basin