Patent US3214745A successfully refreshed from Google Patents.
US3214745A
Expired / Lapsed
US
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Multiple aperture memory core
Assignee: Westinghouse Electric Corp
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Filing: 1962-08-23
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Granted: 1965-10-26
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Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 William F Eiseman
- 👤 John C Donohue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:51
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
A MAGNETIC CORE HAVING A MAJOR APERTURE AND AT LEAST ONE MINOR APERTURE; EACH SAID MINOR APERTURE HAVING A MAJOR AXIS AND A MINOR AXIS; THE MAJOR AXIS OF EACH SAID MINOR APERTURE HAVING A LENGTH SUBSTANTIALLY EQUAL TO THE THICKNESS OF SAID CORE PLUS THE THICKNESS OF THE WIRE TO BE EXTENDED THERETHROUGH; THE CROSS-SECTIONAL AREA BETWEEN ANY APERTURE AND THE PERIPHERY OF SAID CORE BEING SUBSTANTIALLY EQUAL TO THE CROSS-SECTIONAL AREA BETWEEN ANY TWO APERTURES.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |