Patent US2866133A successfully refreshed from Google Patents.
US2866133A
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US
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Electric lamp circuit
Assignee: EMI Group Ltd
•
Filing: 1954-07-02
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Granted: 1958-12-23
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Expires: 1974-07-02
Abstract
No abstract record available.
Inventors
- 👤 Strange John William
- 👤 Waigh Douglas Thomas
- 👤 Bloxsidge William Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:27
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/36; H05B41/38; H05B41/39; H05B41/391; Y; Y10; Y10S; Y10S315/00; Y10S315/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1977231A
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US2056661A
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US2392845A
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US2394966A
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US2407685A
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US2461265A
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US2458277A
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US2462371A
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US2586402A
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US2465059A
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US2644108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |