Patent US2932770A successfully refreshed from Google Patents.
US2932770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent device
Assignee: GTE Sylvania Inc
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Filing: 1958-04-29
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Granted: 1960-04-12
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Expires: 1978-04-29
Abstract
No abstract record available.
Inventors
- 👤 Donald C Livingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:51
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/12; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H05; H05B; H05B33/00; H05B33/12
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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |