Patents by Inventor Louise L. Sylvester

Louise L. Sylvester 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: D323748
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: February 11, 1992
    Inventors: Ann M. LaCroix, Louise L. Sylvester