Patents by Inventor Franz Hofele

Franz Hofele 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).

  • Method of making a broach
    Patent number: 4985609
    Abstract: A broach which has several cutting elements and a support unit to which the cutting elements are attached is made by cutting the cutting elements through electric-discharge machining, in particular wire-EDM so that the production thereof is less time consuming and less expensive. Moreover, the cutting elements can already be made to final size and final hardness.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: January 15, 1991
    Inventor: Franz Hofele