US2513091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instant start lamp and circuit
Assignee: GTE Sylvania Inc
•
Filing: 1948-07-30
•
Granted: 1950-06-27
•
Expires: 1968-07-30
Abstract
No abstract record available.
Inventors
- 👤 Warren S Frohock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:31
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/545; Y; Y10; Y10S; Y10S315/00; Y10S315/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1984483A
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US2232789A
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US2231999A
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US2337993A
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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) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |