Patents by Inventor Claire B. Lenkoff

Claire B. Lenkoff 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).

  • Book package
    Patent number: 5234344
    Abstract: A book package of sheets including printed materials thereon comprised of printed writing of a connectible series of written expressions and a series of drawing illustrations compatible with the written expressions to allow the sheets to be chronologically and compatibly arranged in illustrated chronological form, a portion of the printed materials being printed in latent form which can be made visible with a marker included in the book package.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: August 10, 1993
    Assignee: Stry-Lenkoff Company
    Inventor: Claire B. Lenkoff