US2489853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated coil for electric apparatus
Assignee: General Electric Co
•
Filing: 1944-12-18
•
Granted: 1949-11-29
•
Expires: 1964-12-18
Abstract
No abstract record available.
Inventors
- 👤 Britten Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:41
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US359205A
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US753461A
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US783546A
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US986291A
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US1595838A
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US2007047A
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US2344334A
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US2385983A
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US2380111A
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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) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |