US2452518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonactinic fluorescent lamp
Assignee: GTE Sylvania Inc
•
Filing: 1944-12-18
•
Granted: 1948-10-26
•
Expires: 1964-12-18
Abstract
No abstract record available.
Inventors
- 👤 Burns Laurence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:50
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/67; C09K11/69; C09K11/61; C09K11/615; C09K11/616; C09K11/66; C09K11/666; H; H01; H01J; H01J61/00; H01J61/02; H01J61/38; H01J61/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2061892A
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US2269819A
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US2272992A
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US2316366A
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US2298947A
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US2347671A
Cited
US2296643A
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US2314096A
Cited
US2324384A
Cited
US2346522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |