Patents Assigned to Ulla Anette Duarte-Martins
  • Boneplug drill bit
    Patent number: D285343
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: August 26, 1986
    Assignee: Ulla Anette Duarte-Martins
    Inventor: Herminio Duarte-Martins, Jr.