Gusya CylindricalIbikoresho bya SpurIkoreshwa Mubuhinzi Bucukura Imashini Kugabanya Imashini Zamavuta
Gusya CylindricalIbikoresho bya Spur Ikoreshwa Mubuhinzi Bucukura Imashini Kugabanya Imashini Zamavuta
Ibigo icumi bya mbere mu Bushinwa, ifite abakozi 1200, yabonye ibintu 31 byose byavumbuwe hamwe na patenti 9 .Ibikoresho byateye imbere, ibikoresho byo gutunganya ubushyuhe, ibikoresho byo kugenzura.