Patents by Inventor Alfred G. Radtke

Alfred G. Radtke 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).

  • Patent number: 4274616
    Abstract: A stand or supporting books, magazines, pamphlets or other reading material is disclosed herein having a blank provided with score lines defining fold or bending lines which when so folded or bent provides a rearwardly angled back member having triangular side pieces serving as braces with lateral base strips forming a stabilized bottom. The front or lower edge or back member includes a forwardly angled lip on which the book or other reading material rests and further includes a downwardly angled front support member engaging the support surface for stabilizing the lip. A rear brace member is selectively engaged between the base strips for rigidizing the construction.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: June 23, 1981
    Inventor: Alfred G. Radtke