Patents Assigned to Yukio Hirano
  • Patent number: 5080535
    Abstract: A drill chips removing device, comprising a sleeve or a ring formed with a through hole at its central portion for axially passing said drill therethrough and provided with a fixing device for fixing the sleeve or the ring to the drill.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: January 14, 1992
    Assignee: Yukio Hirano
    Inventor: Yukio Hirano