US2818531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent image device
Assignee: GTE Sylvania Inc
•
Filing: 1954-06-24
•
Granted: 1957-12-31
•
Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Sandford Christopher Peek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/14; H05; H05B; H05B33/00; H05B33/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN ELECTROLUMINESCENT IMAGE-PRODUCING DEVICE COMPRISING AN ELECTROLUMINESCENT PHOSPHOR LAYER, A SERIES OF CONDUCTIVE LINES ON ONE SIDE OF SAID LAYER, ANOTHER SERIES OF CONDUCTIVE LINES ON THE OTHER SIDE OF SAID LAYER, SAID SERIES BEING INSULATED FROM EACH OTHER AND THE PROJECTION
Claim 2
Dependent Claim
42 words
AN ELECTROLUMINESCENT IMAGE-PRODUCING DEVICE COMPRISING AN ELECTROLUMINESCENT PHOSPHOR LAYER, A SERIES OF CONDUCTIVE LINES ON ONE SIDE OF SAID LAYER, ANOTHER SERIES OF CONDUCTIVE LINES ON THE OTHER SIDE OF SAID LAYER, SAID SERIES BEING INSULATED FROM EACH OTHER AND THE PROJECTION
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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |