Patents Assigned to Mapatex Establishment
  • Saw blade and fret-saw combination and method for use thereof
    Patent number: 4013107
    Abstract: A fret-saw blade in combination with a fret-saw for sawing out slits starting from small-diameter holes, the blade having two rectangular segments of varying width with each of these segments having teeth of the same depth and parallel toothed and untoothed sides, and a method for using said combination.
    Type: Grant
    Filed: January 13, 1976
    Date of Patent: March 22, 1977
    Assignee: Mapatex Establishment
    Inventors: Ferdinand Steiger, Werner Wahlen