Patents Examined by C. E. Helfin
  • Motorized abrasive cue tip shaper
    Patent number: D286852
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: November 25, 1986
    Inventor: Robert C. Ditmanson
  • Punch
    Patent number: D294000
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: February 2, 1988
    Inventor: Klaus Friedrich