Patents by Inventor Ferdinand Steiger

Ferdinand Steiger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 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