Patents Assigned to Bio-Plas
  • Pipette tip
    Patent number: D255601
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: June 24, 1980
    Assignee: Bio-Plas
    Inventor: Donald H. De Vaughn
  • Pipette tip
    Patent number: D256052
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: July 22, 1980
    Assignee: Bio-Plas
    Inventor: Donald H. De Vaughn