Patents Represented by Attorney John A. Clifford
  • Patent number: 4974320
    Abstract: An improved utility knife including a handle with a razor cutting blade end and a toothed cutting wheel end. An alternate embodiment includes a necked handle with a toothed cutting wheel affixed to a retractable arm which thereby allows the toothed cutting wheel to be retracted within the handle. A measuring device retention means is located near the toothed cutting wheel such that drywall can be measured and scored at the same time.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: December 4, 1990
    Inventor: Peter D. Pelletier