Patents by Inventor Frecerick C. Hahn

Frecerick C. Hahn 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).

  • Excavating tooth
    Patent number: 4404760
    Abstract: An excavating tooth wherein the coupling between the point and the adapter is achieved through an external lock to convert lateral point unseating forces from shear to compression.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: September 20, 1983
    Assignee: Esco Corporation
    Inventors: Frecerick C. Hahn, William R. Barber, Jr., David A. Hampel