Books – strips – and leaves – Book – element thereof – or accessory therefor – Multiple
Patent
1997-03-14
1998-11-17
Fridie, Jr., Willmon
Books, strips, and leaves
Book, element thereof, or accessory therefor
Multiple
283631, B42D 1500
Patent
active
058366148
ABSTRACT:
The present invention relates to a book with various sections effectively and comfortably to study by referring to the solutions, answers and hints after working out the questions without relying on the solutions answers and hints while the students work out the questions. According to the present invention, there is provided a book with various sections comprising: a plurality of same page sheets means divided into two of more sections, sheets of each sections being formed to be turned independently each other; a front and back cover means for protecting the divided sheets means; and means for binding one side of the divided sheets means and edges of one sides of the front and back cover means together. In case the present invention, the questions are printed in one of said sections while the question explanations, hints, reference matters and correct answers are printed in the other of said sections, thereby conveniently confirming a correct answer, the question explanations, hints, reference material, etc. corresponding to a question after solving the question without relying upon the hints or the question explanations to cause efficiency of study to improve.
REFERENCES:
patent: 2579915 (1951-12-01), Flatu et al.
patent: 3028178 (1962-04-01), Pietrangeli
patent: 3275343 (1966-09-01), Holm
patent: 3479752 (1969-11-01), Criger
patent: 4034485 (1977-07-01), Milutinovich
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