Patents Assigned to Diversified Visual Techniques, Inc.
  • Lightweight magnetic tape cassette
    Patent number: D304938
    Type: Grant
    Filed: March 24, 1987
    Date of Patent: December 5, 1989
    Assignee: Diversified Visual Techniques, Inc.
    Inventors: John J. Lowe, Robert L. Stipe, Alan J. Fujii