Patents Assigned to George Kees Research & Development Co., Inc.
  • Patent number: 4777939
    Abstract: A retractor which includes a body portion and a side arm portion extending transversely of the body portion. A first hook member is mounted on the body portion and a second hook member is mounted for movement on the body portion between a contracted position adjacent the first hook member and an extended position. The hook members have oppositely directed pivot point portions which engage opposed faces of adjacent vertebrae. The retractor pivots about the pivot point portions.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: October 18, 1988
    Assignee: George Kees Research & Development Co., Inc.
    Inventors: George Kees, Jr., Set Shahbabian, Horst R. Hickmann