Patents by Inventor Frederick C. Hadfield

Frederick C. Hadfield 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).

  • Concealed access furniture
    Patent number: 4392628
    Abstract: The disclosure is of a frame member rotatable about a vertical axis, with means in the rotative system for locking the frame member in 180.degree. positions and also for permitting relative movement relative to the rotative means whereby a frame member may be integrated with respect to a stationary wall opening. The rotatable means is a circular race with indentations at 180.degree. positions.
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: July 12, 1983
    Inventors: Frederick C. Hadfield, Marvin R. McElroy