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US 4,811,973 AGranted
Bound book with bound holder carrying loose-leaf pages
OwnerVictor Kumar-Misirinventor
Life of this patent
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Abstract
A book containing question or other instruction pages permanently bound therein by a binding such as a spiral wire binding. A holder of small lateral dimension is also bound by the permanent binding and carries loose-leaf answer or work pages secured to the holder by a loose-leaf binding such as a bendable metal strip. The book can be laid open flat or folded back on itself. The work pages can be used up and then replaced.
Claims12
A book comprising:
- (a) a cover,
- (b) a set of thin question pages and a set of thin answer pages,
- (c) said set of question pages containing question material printed thereon for marking an answer page,
- (d) each answer page containing matter printed thereon to be marked in accordance with questions in said question pages,
- (e) a holder, said holder being a single flat thin sheet of material,
- (f) a single substantially permanent-binding member, said binding member being connected directly between said cover, said question pages and said holder, for said single binding member permanently to secure both said question pages and said holder to said cover,
- (g) each answer page having a margin portion having holes pre-formed therein, and
- (h) securing means releasably securing said answer pages to said holder so that when said answer pages have been used, they can be removed and replaced by fresh answer pages, said securing means comprising a readily removable fastening member of small thickness connected to said holder and extending through said holes.
5 more elements
Dependencies are inferred from the claim text.