Patents by Inventor John P. Fraijo

John P. Fraijo 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).

  • Apparatus and method for filling trenches in paved surfaces
    Patent number: 4507012
    Abstract: Apparatus and method for filling trenches in paved surfaces involve a primary structure movable along a trench to conduct a substantially granular paving material into the trench, and provision for vibrating the paving material as it is conducted into the trench. In a preferred embodiment the primary structure includes a rearwardly sloped surface which engages the paving material as the container moves, urging the paving material downwardly into the trench.
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: March 26, 1985
    Inventors: John J. Corcoran, John P. Fraijo