US3531585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state display device employing continuous phosphor layers
Assignee: AT&T Inc
•
Filing: 1967-03-15
•
Granted: 1970-09-29
•
Expires: 1987-03-15
Abstract
No abstract record available.
Inventors
- 👤 Robert J Strain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:11
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2925532A
Cited
US3021387A
Cited
US2928980A
Cited
US3070701A
Cited
US3249804A
Cited
US3223886A
Cited
US3242482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |