US2774903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-actinic fluorescent lamp
Assignee: GTE Sylvania Inc
•
Filing: 1951-01-17
•
Granted: 1956-12-18
•
Expires: 1971-01-17
Abstract
No abstract record available.
Inventors
- 👤 Burns Laurence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:18
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/0805; C09K11/77; C09K11/7715; C09K11/7716; H; H01; H01J; H01J61/00; H01J61/02; H01J61/38; H01J61/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2359789A
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US2476681A
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US2393469A
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US2413940A
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US2405261A
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US2582453A
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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 |