US2937352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic core structure
Assignee: General Electric Co
•
Filing: 1953-04-23
•
Granted: 1960-05-17
•
Expires: 1973-04-23
Abstract
No abstract record available.
Inventors
- 👤 Jacob J Vienneau
- 👤 Kenneth D Beardsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:48
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F41/0233; H01F41/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA464243A
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US1834898A
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US2261983A
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US2372074A
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US2411374A
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US2393439A
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US2456458A
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US2554262A
Cited
US2478029A
Cited
GB624233A
Cited
US2655717A
Cited
US2489625A
Cited
US2586320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |