Patents by Inventor Elza C. Phelps

Elza C. Phelps 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: D263345
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: March 16, 1982
    Inventor: Elza C. Phelps