US2579308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer
Assignee: General Electric Co
•
Filing: 1948-11-04
•
Granted: 1951-12-18
•
Expires: 1968-11-04
Abstract
No abstract record available.
Inventors
- 👤 Marshall H Dole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:02
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US342553A
Cited
US432050A
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US1804852A
Cited
US2053176A
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US2150382A
Cited
US2531697A
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US2370633A
Cited
US2433898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |