Patents by Inventor Friedhelm Pickhan

Friedhelm Pickhan 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).

  • Patent number: D300500
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: April 4, 1989
    Inventor: Friedhelm Pickhan