Patents by Inventor Michael R. Slingerland

Michael R. Slingerland 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: D258516
    Type: Grant
    Filed: August 24, 1977
    Date of Patent: March 10, 1981
    Inventor: Michael R. Slingerland