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US224329A
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US
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Electric-lighting apparatus
Assignee: Individual
•
Filing: 1879-02-03
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Granted: 1880-02-10
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Expires: 1899-02-03
Abstract
No abstract record available.
Inventors
- 👤 Alva Edison Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:44
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/98; H05; H05B; H05B31/00; H05B31/02; H05B31/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1883-02-09 | 1883-08-11 | 1884-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1887-02-09 | 1887-08-11 | 1888-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1891-02-09 | 1891-08-11 | 1892-02-10 | $7700.00 | Window Closed / Lapsed |