Patents by Inventor John E. Mahowald

John E. Mahowald 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).

  • Device for holding soft-covered books
    Patent number: 4418825
    Abstract: A device for supporting a soft-cover book having a stiff spine including a hook to extend from a slit in the spine, a locking element beneath the hook to engage the slit in the spine and a support element that is connected to the locking element and extends beyond it in two directions, the support element being adapted to support the book by its spine and to lie between adjacent pages in the book, with the whole device made of flat sheet material not thicker than 1.2 millimeters.
    Type: Grant
    Filed: November 5, 1981
    Date of Patent: December 6, 1983
    Inventor: John E. Mahowald
  • Book hanger
    Patent number: D272494
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: February 7, 1984
    Inventor: John E. Mahowald
  • Rack for hanging soft cover books
    Patent number: D278354
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: April 9, 1985
    Inventor: John E. Mahowald