Patents by Inventor Joseph Felton Wilkerson

Joseph Felton Wilkerson 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).

  • Composite construction form system
    Patent number: 4085918
    Abstract: In abstract, a preferred embodiment of this invention is a multi-purpose form system for use in culverts, manholes and other locations. A basic semi-cylindrical form is provided for use in combination with other types of forms to give a complete system for accomplishing the results intended.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: April 25, 1978
    Inventor: Joseph Felton Wilkerson