Dripper irrigation systems comprised of drippers, bubblers, emitters, sprinklers, plastic pipe tees, connectors, adaptors, couplings, hole plugs and elbows, plastic stakes for use in irrigation, and plastic clamps for use in irrigation; water filters; filter screens for water filters; valves being parts of sprinkler systems; irrigation sprinklers; water jets for use in irrigation; water misting irrigation nozzles; drip emitters for drip irrigation systems; drip bubblers for drip irrigation sy...