Patents by Inventor Ronald W. Birmingham

Ronald W. Birmingham 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).

  • Nailing schedule center marker
    Patent number: 4993159
    Abstract: A marking apparatus is dislcosed which has a reversible rotating drum removably enclosed in a housing which has on its outer extremities, projections, which come into contact with a marking device at each revolution and the projection then deposits the marking fluid on a workpiece such as a 4.times.8 sheet so that a nailing schedule may be marked accurately around the edges and down the center of the workpiece.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: February 19, 1991
    Inventors: Harold L. Hull, Ronald W. Birmingham