Patent US2975290A successfully refreshed from Google Patents.
US2975290A
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US
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Electroluminescent devices and networks
Assignee: General Electric Co
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Filing: 1956-05-15
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Granted: 1961-03-14
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Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 Charles F Spitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/14; G; G11; G11C; G11C11/00; G11C11/21; G11C11/42; H03; H03B; H03B17/00; H03F; H03F17/00; H03K; H03K17/00; H03K17/51; H03K17/78; H03K3/00; H03K3/02; H03K3/42; H05; H05B; H05B33/00; H05B33/12; H05B33/26; H05B44/00; Y; Y02; Y02B; Y02B20/00; Y02B20/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735049A
Cited
US2839690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |