US4832191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calculator holder
Assignee: South Western Publishing Co
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Filing: 1988-02-10
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Granted: 1989-05-23
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Expires: 2008-02-10
Abstract
Abstract A calculator holder for attaching a calculator to the cover of a book has a cardboard sleeve adapted to fit over either the front or back cover of a book. A flap is hingably connected to the bottom edge of the sleeve and has a thin calculator supported therein. The flap may be folded about the bottom edge of the book to reside between the book cover and the book pages when the book is closed during non-use, or unfolded to an open position to expose the calculator for use in conjunction with the book. Use of the calculator does not interfere with the turning of pages required during normal use of the book.
Inventors
- 👤 Robert Gerver
- 👤 Richard J. Sgroi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:35
CPC Classifications
B; B42; B42D; B42D3/00; B42D3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
In combination a book and a calculator holder said book having a top surface and a bottom surface and two outer covers separated by a plurality of pages; said pages extending in a vertical direction from said top surface to said bottom surface of said book said holder having a sleeve having a top edge and a bottom edge, a front side and a back side and a first and a second open side edges and one of said covers extending through said first open side edge between said front side and back side holding said holder to said book; said holder further having a flap having a top and bottom surfaces said flap hingedly connected to said bottom edge of said sleeve a calculator secured to said flap said calculator exposed for use when said flap is in an open position said entire calculator positioned between said pages and said one of said covers when in a closed position.
Claim 2
Dependent Claim
160 words
In combination a book and a calculator holder said book having a top surface and a bottom surface and two outer covers separated by a plurality of pages; said pages extending in a vertical direction from said top surface to said bottom surface of said book said holder having a sleeve having a top edge and a bottom edge, a front side and a back side and a first and a second open side edges and one of said covers extending through said first open side edge between said front side and back side holding said holder to said book; said holder further having a flap having a top and bottom surfaces said flap hingedly connected to said bottom edge of said sleeve a calculator secured to said flap said calculator exposed for use when said flap is in an open position said entire calculator positioned between said pages and said one of said covers when in a closed position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |