Patent US4878844A successfully refreshed from Google Patents.
US4878844A
Expired / Lapsed
US
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Teaching aid having tactile feedback
Assignee: SIERRA ENTERTAINMENT Inc
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Filing: 1988-06-20
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Granted: 1989-11-07
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Expires: 2008-06-20
Abstract
Abstract A set of characters is provided wherein each character is formed by arranging a number of relatively small like characters in a pattern that presents a filled-in outline of the character. Each of the small like characters are printed by a thermographic process to provide a character which protrudes slightly from the media surface thus providing tactile feedback when the character is touched or traced with a finger.
Inventors
- 👤 Elon Gasper
- 👤 Nedra Goedert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:36
CPC Classifications
G; G09; G09B; G09B17/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
183 words
A teaching aid in booklet-form comprising: a plurality of pages, each page having a different letter of an alphabet printed on a first side of said page and an object or animal depicted on a second side of said page, said object or animal associated with a letter of the alphabet, said associated letter different than the letter printed on the first side of said page, said plurality of pages arranged such that the first side of a page faces the second side of the next successive page, the letter on the first side of said page associated with the object or animal depicted on the second side of said next successive page; each of said different letters comprising a plurality of relatively small like letters disposed in spaced relationship on the surface of the first side of a different page and arranged in a pattern to form an outline of said letter, said outline filled in with said small like letters in said spaced relationship; and each of said small like letters formed to protrude slightly from the surface of the page.
Claim 2
Dependent Claim
183 words
A teaching aid in booklet-form comprising: a plurality of pages, each page having a different letter of an alphabet printed on a first side of said page and an object or animal depicted on a second side of said page, said object or animal associated with a letter of the alphabet, said associated letter different than the letter printed on the first side of said page, said plurality of pages arranged such that the first side of a page faces the second side of the next successive page, the letter on the first side of said page associated with the object or animal depicted on the second side of said next successive page; each of said different letters comprising a plurality of relatively small like letters disposed in spaced relationship on the surface of the first side of a different page and arranged in a pattern to form an outline of said letter, said outline filled in with said small like letters in said spaced relationship; and each of said small like letters formed to protrude slightly from the surface of the page.
Claim 3
Dependent Claim
71 words
A teaching aid in booklet-form as in claim 1 wherein each of said small like letters being a lower case representation of said different letter when said different letter is displayed as an upper case representation of said different letter and each of said small like letters being an upper case representation of said different letter when said different letter is displayed as a lower case representation of said different letter.
Claim 4
Dependent Claim
71 words
A teaching aid in booklet-form as in claim 1 wherein each of said small like letters being a lower case representation of said different letter when said different letter is displayed as a lower case representation of said different letter and each of said small like letters being an upper case representation of said different letter when said different letter is displayed as an upper case representation of said different letter.
Claim 5
Dependent Claim
51 words
A teaching aid in booklet-form as in claim 1 further comprising a plurality of sheets of tracing paper, one sheet of tracing paper inserted between each page and the next successive page such that a separate sheet of tracing paper overlays the protruding letters on the front side of each page.
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) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |