Patent US4949978A successfully refreshed from Google Patents.
US4949978A
Expired / Lapsed
US
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Magnifying device
Assignee: Individual
•
Filing: 1988-11-25
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Granted: 1990-08-21
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Expires: 2008-11-25
Abstract
Abstract A magnifying device for use with certain games and for reading small print. More particularly, the device has non-parallel, spaced apart lower and upper surfaces such that when the device is placed on a flat surface, the upper surface is at an oblique angle to the viewer so that an underlying number or word is magnified and more clearly seen. The device may also serve as a bingo marker and magnifier for magnifying the given number over which the marker lays.
Inventors
- 👤 David Berner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:32
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/002; A; A63; A63F; A63F3/00; A63F3/06; A63F9/00; A63F9/06; A63F9/0613; A63F2009/0629; A63F2009/0634; Y; Y10; Y10S; Y10S273/00; Y10S273/14; Y10S273/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A device for use for use on flat surface having indicia and adapted to provide a user with an enlargement of the indicia, said device comprising a preform made from a transparent material and having a flat lower surface adapted to receive the flat surface, a convex upper surface and sides therebetween which are tapered outwardly from said lower surface to said upper surface so that the periphery of said upper surface is greater than the periphery of said lower surface for providing a viewing surface area larger than said lower surface, the length of said sides are not uniform so that the plane of said upper surface is at an angle relative to said lower surface for providing an image, at an oblique angle to the user, of an indicia over which the preform lays.
Claim 2
Independent Claim
136 words
A device for use for use on flat surface having indicia and adapted to provide a user with an enlargement of the indicia, said device comprising a preform made from a transparent material and having a flat lower surface adapted to receive the flat surface, a convex upper surface and sides therebetween which are tapered outwardly from said lower surface to said upper surface so that the periphery of said upper surface is greater than the periphery of said lower surface for providing a viewing surface area larger than said lower surface, the length of said sides are not uniform so that the plane of said upper surface is at an angle relative to said lower surface for providing an image, at an oblique angle to the user, of an indicia over which the preform lays.
Claim 3
Dependent Claim
19 words
The device according to claim 1 wherein the curvature of said upper surface is defined by a simple radius.
Claim 4
Independent Claim
110 words
A device for use in playing bingo games and for providing the player with an enlargement of a given number on a bingo card, said device comprising a preform made from a transparent acrylic material and having a flat lower surface adapted to receive the bingo card, a convexly-shaped upper surface and sides extending obliquely outwardly from said lower surface to said upper surface for providing a viewing surface area larger than said lower surface, the plane of said upper surface is at an angle relative to said lower surface for providing an image at an oblique angle to the player of the given number over which the preform lays.
Claim 5
Independent Claim
110 words
A device for use in playing bingo games and for providing the player with an enlargement of a given number on a bingo card, said device comprising a preform made from a transparent acrylic material and having a flat lower surface adapted to receive the bingo card, a convexly-shaped upper surface and sides extending obliquely outwardly from said lower surface to said upper surface for providing a viewing surface area larger than said lower surface, the plane of said upper surface is at an angle relative to said lower surface for providing an image at an oblique angle to the player of the given number over which the preform lays.
Claim 6
Dependent Claim
19 words
The device according to claim 3 wherein the curvature of said upper surface is defined by a simple radius.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |