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roţi dinţate (30) |
invenţii (25) |
brevete de invenţie (13) |
inventions (11) |
gear-wheels (6) |
IPC: B23F 9/06 (2006.01) (6) |
toothed wheels (6) |
gear wheels (5) |
teeth (5) |
transmisii precesionale (5) |
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