Patents by Inventor Raymond M. Sipka

Raymond M. Sipka 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: D424759
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: May 9, 2000
    Inventor: Raymond M. Sipka