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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Eikrem; Webjorn
Address:
Woodinville, WA
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
6273639 Method and apparatus for facilitating migration of fish past dams and other barriers in waterway August 14, 2001
Method and apparatus for fish migration past dams and other water barriers. A preferred embodiment 100 comprises a conduit 101 passing from downstream side 22 of water barrier 10 to upstream side 21 of the barrier, flow-controlling valves 102 and 105 disposed in series within conduit 101










 
 
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