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US 4,544,360 AGranted
Book reference list
OwnerJoseph Goodmaninventor
Life of this patent
Estimating the term…
Abstract
A reference list for use with a book comprises a plurality of information bearing lines which are initially masked and are progressively unmasked as the book is read. This provides a progressive index which may in the case of a narrative provide a list of characters as a memory aid or in the case of a teaching book it may provide the answers only to the questions previously attempted.
Claims7
A memory aid for use with a book, comprising:
- a sheet having inscribed thereon information related to the contents of the book, which information is arranged in a predetermined sequence,
- a holder having transparent pockets, said holder retaining said sheet, and
- masking means including opaque strips removably receivable in said transparent pockets, each strip overlying a line of information and adapted to be removed by the reader as required so as to provide a memory aid in which only information relating to parts of the book already read is revealed.
Dependencies are inferred from the claim text.