Patent US3815920A successfully refreshed from Google Patents.
US3815920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Puzzle and book structure
Assignee: Book Covers Inc
•
Filing: 1969-03-28
•
Granted: 1974-06-11
•
Expires: 1989-03-28
Abstract
Abstract A combination puzzle and book structure wherein a multi-layered leaf board thereof has a partial unadhered common surface between two of its layers in the central region of the leaf board. An end leaf is adhered to the top layer of the leaf board. Cuts extend from the end leaf to the partial unadhered common surface to form puzzle pieces. The end leaf and the leaf board are individually hinged to a spine board and a book is adhered to the spine board.
Inventors
- 👤 L Carter
- 👤 E Mullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:06
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/38; A63F; A63F9/00; A63F9/06; A63F9/10; A63F9/1044
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
A combination puzzle and book structure comprising at least one leaf board of multi-layer construction, at least two layers of which have a partial unadhered common surface therebetween, said partial unadhered surface being in the central region of the leaf board, a spine board hingedly connected to the leaf board, an end leaf having a central cut-out region corresponding to said partial unadhered common surface and adhered to the peripheral portion of the top layer of the leaf board and joined to the spine board to permit hinged movement therebetween, said top layer of the leaf board having cuts extending from said partial unadhered common surface to the exterior of said top layer of the leaf board to form a plurality of removable pieces in said leaf board, and a book having a spine portion that is adhered to said spine board, and with the end pages of said book being unadhered to said leaf board.
Claim 2
Dependent Claim
156 words
A combination puzzle and book structure comprising at least one leaf board of multi-layer construction, at least two layers of which have a partial unadhered common surface therebetween, said partial unadhered surface being in the central region of the leaf board, a spine board hingedly connected to the leaf board, an end leaf having a central cut-out region corresponding to said partial unadhered common surface and adhered to the peripheral portion of the top layer of the leaf board and joined to the spine board to permit hinged movement therebetween, said top layer of the leaf board having cuts extending from said partial unadhered common surface to the exterior of said top layer of the leaf board to form a plurality of removable pieces in said leaf board, and a book having a spine portion that is adhered to said spine board, and with the end pages of said book being unadhered to said leaf board.
Claim 3
Dependent Claim
21 words
A combination puzzle and book structure as set forth in claim 1, wherein said end leaf is printed with printed matter.
Claim 4
Dependent Claim
21 words
A combination puzzle and book structure as set forth in claim 1, wherein said removable pieces are of a rectangular shape.
Claim 5
Dependent Claim
20 words
A combination puzzle and book structure as set forth in claim 1, wherein said removable pieces are of irregular shape.
Claim 6
Dependent Claim
35 words
A combination puzzle and book structure as set forth in claim 1, wherein said leaf board is of three layers, and said cuts extend through two layers thereof to form pieces of two layered thicknesses.
Claim 7
Dependent Claim
33 words
A combination puzzle and book structure as set forth in claim 1, further comprising a second leaf board hinged to said spine board to have said spine board disposed between said leaf boards.
Claim 8
Dependent Claim
44 words
A combination puzzle and book structure as set forth in claim 6, further comprising a jacket covering the outer ends of said leaf boards and the border region on the top layer of said first leaf board, said border region excluding the removable pieces.
References Cited (Backward Citations)
US1602356A
Cited
US1958990A
Cited
US1972206A
Cited
US2007530A
Cited
GB447152A
Cited
FR812971A
Cited
US2538085A
Cited
US2946137A
Cited
US3107918A
Cited
US3131488A
Cited
US3171214A
Cited
US3161423A
Cited
US3167328A
Cited
US3195924A
Cited
US3171540A
Cited
US3206226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |