US2780746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incandescent-electroluminescent lamp
Assignee: Westinghouse Electric Corp
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Filing: 1953-10-01
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Granted: 1957-02-05
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Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Edward G F Arnott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:32
CPC Classifications
H; H05; H05B; H05B33/00; H01; H01K; H01K1/00; H01K1/28; H01K1/32; H05B33/12; H05B33/26; F; F21; F21K; F21K9/00; F21K9/20; F21K9/23; F21K9/232; F21Y; F21Y2105/00; F21Y2113/00; F21Y2113/20; F21Y2115/00; F21Y2115/20
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) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |