Patents by Inventor Henk Verkerke

Henk Verkerke 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: D308604
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: June 19, 1990
    Assignee: Cirkel B.V.
    Inventor: Henk Verkerke