Patents by Inventor Walter Bitterlich

Walter Bitterlich 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).

  • Tree-trunk-diameter gauge
    Patent number: 5809660
    Abstract: A tree-trunk-diameter gauge has an adjustment which enables, by a simple multiplication factor of the scale indication, the use of the gauge for a range of larger diameter trees in addition to a range of smaller diameter trees. The gauge can be mounted by holes in the gauge body and an elastic band or by a hook and loop fastener to the back of the hand of the user.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: September 22, 1998
    Assignee: Feinmechanische Optische Betriebsgesellschaft mbH
    Inventors: Walter Bitterlich, Benno Hesske, Gerlinde Ruthner