Patent US2527075A successfully refreshed from Google Patents.
Patent US3078373A successfully refreshed from Google Patents.
US3078373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent matrix and access device
Assignee: AT&T Inc
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Filing: 1960-04-21
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Granted: 1963-02-19
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Expires: 1980-04-21
Abstract
No abstract record available.
Inventors
- 👤 Albert M Wittenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
G; G11; G11C; G11C7/00; H; H03; H03K; H03K17/00; H03K17/51; H03K17/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN COMBINATION, AN ELECTROLUMINESCENT MATRIX HAVING A PLURALITY OF CROSSPOINTS DEFINED BY ROW AND COLUMN CONDUCTORS CONTIGUOUSLY POSITIONED ON OPPOSITE SIDES OF A LAYER OF ELECTROLUMINESCENT MATERIAL, A PLURALITY OF LIGHT-RESPONSIVE SWITCH MEANS SPACED IN SAID MATRIX APART FROM SAID CROSSPOINTS AND HAVING A PAIR OF SAID PLURALITY OF SWITCH MEANS ASSOCIATED WITH EACH OF SAID CROSSPOINTS, ACCESS CIRCUIT MEANS POSITIONED IN A LIGHT TRANSFER RELATION WITH SAID LIGHT-RESPONSIVE SWITCH MEANS AND INCLUDING A PLURALITY OF ELECTROLUMINESCENT ELEMENTS HAVING DISTINCT ELEMENTS OF SAID PLURALITY OPTICALLY ALIGNED WITH SAID LIGHTRESPONSIVE SWITCH MEANS AND ACTIVATING MEANS BEING OPERABLE TO ESTABLISH LUMINESCENCE IN A SELECTED PAIR OF SAID PLURALITY OF ELECTROLUMINESCENT ELEMENTS, AND MEANS INCLUDING A PAIR OF SAID LIGHT-RESPONSIVE SWITCH MEANS RESPONSIVE TO THE LUMINESCENCE IN SAID SELECTED PAIR OF ELECTROLUMINESCENT ELEMENTS FOR ACTIVATING THE CROSSPOINT COMMON TO SAID PAIR OF LIGHT-RESPONSIVE SWITCH MEANS.
Claim 2
Dependent Claim
142 words
IN COMBINATION, AN ELECTROLUMINESCENT MATRIX HAVING A PLURALITY OF CROSSPOINTS DEFINED BY ROW AND COLUMN CONDUCTORS CONTIGUOUSLY POSITIONED ON OPPOSITE SIDES OF A LAYER OF ELECTROLUMINESCENT MATERIAL, A PLURALITY OF LIGHT-RESPONSIVE SWITCH MEANS SPACED IN SAID MATRIX APART FROM SAID CROSSPOINTS AND HAVING A PAIR OF SAID PLURALITY OF SWITCH MEANS ASSOCIATED WITH EACH OF SAID CROSSPOINTS, ACCESS CIRCUIT MEANS POSITIONED IN A LIGHT TRANSFER RELATION WITH SAID LIGHT-RESPONSIVE SWITCH MEANS AND INCLUDING A PLURALITY OF ELECTROLUMINESCENT ELEMENTS HAVING DISTINCT ELEMENTS OF SAID PLURALITY OPTICALLY ALIGNED WITH SAID LIGHTRESPONSIVE SWITCH MEANS AND ACTIVATING MEANS BEING OPERABLE TO ESTABLISH LUMINESCENCE IN A SELECTED PAIR OF SAID PLURALITY OF ELECTROLUMINESCENT ELEMENTS, AND MEANS INCLUDING A PAIR OF SAID LIGHT-RESPONSIVE SWITCH MEANS RESPONSIVE TO THE LUMINESCENCE IN SAID SELECTED PAIR OF ELECTROLUMINESCENT ELEMENTS FOR ACTIVATING THE CROSSPOINT COMMON TO SAID PAIR OF LIGHT-RESPONSIVE SWITCH MEANS.
References Cited (Backward Citations)
US2932746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |