US3290554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent display screen and circuit therefor
Assignee: Individual
•
Filing: 1962-12-17
•
Granted: 1966-12-06
•
Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Edgar A Sack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:56
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/02; H05B33/06; H05B33/22
Claims Analysis
Total Claims: 0
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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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |