Patent US2827616A successfully refreshed from Google Patents.
US2827616A
Expired / Lapsed
US
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High temperature transformer construction or the like
Assignee: McGraw Edison Co
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Filing: 1952-08-06
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Granted: 1958-03-18
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Expires: 1972-08-06
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:12
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/322; H01B; H01B3/00; H01B3/18; H01B3/48; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1452158A
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US1639145A
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US1664541A
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US2348239A
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US2454218A
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US2460795A
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US2601337A
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US2571418A
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US2527236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |