Patents Assigned to The Tri-V Corporation
  • Knife sharpener
    Patent number: D326989
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: June 16, 1992
    Assignee: The Tri-V Corporation
    Inventors: Frank R. Button, Alvin E. Taylor
  • Knife sharpener
    Patent number: D327402
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: June 30, 1992
    Assignee: The TRI-V Corporation
    Inventors: Frank R. Button, Alvin E. Taylor
  • Knife sharpener
    Patent number: D328847
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: August 25, 1992
    Assignee: Tri-V Corporation
    Inventors: Frank R. Button, Alvin E. Taylor