Patent US2930997A successfully refreshed from Google Patents.
US2930997A
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Magnetic core construction
Assignee: General Electric Co
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Filing: 1954-08-11
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Granted: 1960-03-29
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Expires: 1974-08-11
Abstract
No abstract record available.
Inventors
- 👤 Fisher Frank James
- 👤 Park Kenneth John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:56
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/08; H01F38/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE517020A
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US1777256A
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US1803868A
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US2170446A
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US2493683A
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US2611885A
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US2630478A
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US2824263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |