Patent US2772370A successfully refreshed from Google Patents.
US2772370A
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Binary trigger and counter circuits employing magnetic memory devices
Assignee: International Business Machines Corp
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Filing: 1953-12-31
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Granted: 1956-11-27
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Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 George D Bruce
- 👤 Joseph C Logue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/30; G; G11; G11C; G11C19/00; G11C19/02; G11C19/04; H03K23/00; H03K23/76; H03K3/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2584811A
Cited
US2430457A
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US2605306A
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US2620448A
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US2591406A
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US2651728A
Cited
US2682615A
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US2655609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |