Patents by Inventor Ewald Fretz

Ewald Fretz 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).

  • Fastening of a contact element
    Patent number: 6812418
    Abstract: A contact fastened in a contact element by opposite overlaps is provided. The contact is subsequently connected to the contact element with a laser or a special stamping.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: November 2, 2004
    Assignee: Kramski GmbH
    Inventors: Wiestaw Kramski, Joachim Schweizer, Ewald Fretz
  • Fastening of a contact element
    Publication number: 20030196881
    Abstract: A contact fastened in a contact element by opposite overlaps is provided. The contact is subsequently connected to the contact element with a laser or a special stamping.
    Type: Application
    Filed: April 17, 2003
    Publication date: October 23, 2003
    Applicant: Kramski GmbH
    Inventors: Wiestaw Kramski, Joachim Schweizer, Ewald Fretz