US2774737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for coating electroluminescent lamps
Assignee: GTE Sylvania Inc
•
Filing: 1953-07-02
•
Granted: 1956-12-18
•
Expires: 1973-07-02
Abstract
No abstract record available.
Inventors
- 👤 Eric L Mager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:06
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2090617A
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US2224516A
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US2190210A
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US2379507A
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US2318803A
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US2573200A
Cited
US2566349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |