Patent US2105430A successfully refreshed from Google Patents.
US2105430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lamp
Assignee: General Electric Co
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Filing: 1929-09-18
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Granted: 1938-01-11
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Expires: 1949-09-18
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Metcalf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:19
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/58
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) | 1941-01-10 | 1941-07-12 | 1942-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-10 | 1945-07-12 | 1946-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-10 | 1949-07-12 | 1950-01-11 | $7700.00 | Window Closed / Lapsed |