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wind turbines (19) |
blades (5) |
invenţii (5) |
turbine eoliene (5) |
brevete de invenție (4) |
inventions (4) |
invenții (4) |
IPC: F03D 1/00 (2006.01) (4) |
vertical axis wind turbines (4) |
wind energy (4) |
Now showing items 1-10 of 19