US2958854A
Expired / Lapsed
US
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Multi-aperture core element design for magnetic circuits
Assignee: Unisys Corp
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Filing: 1958-03-03
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Granted: 1960-11-01
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Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Hewitt D Crane
- 👤 David R Bennion
- 👤 Fred C Heinzmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:31
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |