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thanks chuck but where would i find out about thes patens are they of public record or is there a book that i can buy any help would be great

also i would like to thank you for your replies thanx

well guys i only stumbled on this page a nd didnt think any more of it heres some info 15 to 20 years ago a mate put a 3 km road into world heritage fain forest pre world heritage also he put in 2km of 2inch poly pipe to a natural dam now over the wet season the wast of water in huge but only 2...

i have water pressure of 100kpa most of the year how is a cheap way to turn this into power