Now showing items 1-10 of 7
invenţii (6) |
brevete de invenţie (4) |
precessional transmissions (3) |
roţi dinţate (3) |
inventions (2) |
transmisii precesionale (2) |
dispozitive de foraj (1) |
drilling machines (1) |
forare (1) |
friction (1) |
Now showing items 1-10 of 7