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SantaMonica
05-14-2013, 11:25 AM
http://www.freepatentsonline.com/8440073.pdf

Floyd R Turbo
05-14-2013, 01:16 PM
So it's basically a combined forward & reverse UGF of sorts. I suppose. As long as you gravel vac (and have gravel) to keep the gravel from clogging and building up waste, looks great!

alum
05-15-2013, 08:05 AM
yes thank SM! this tiny things is going more nuts with me! :evil: