Patents by Inventor Beulah H. Stolpen

Beulah H. Stolpen 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).

  • Educational teaching and self-correcting apparatus adaptable to a variety of subject matters
    Patent number: 4158921
    Abstract: This invention relates to a manipulative self-correcting educational apparatus and method for teaching relationships, similarities and differences in a number of subject matters. It includes one or a plurality of structured, multi-faceted, or facially incremented units bearing a plurality of at least two sets of indicia on each unit: each set of indicia bearing a relationship on at least two of its surfaces, so structured that manipulation of the unit discloses the relationship, or lack of it, in a self-correcting method of positioning of the related and unrelated surfaces on each individual unit or on a plurality of units.
    Type: Grant
    Filed: September 8, 1977
    Date of Patent: June 26, 1979
    Inventor: Beulah H. Stolpen