US3004244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital circuit using magnetic core elements
Assignee: Unisys Corp
•
Filing: 1957-12-23
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Granted: 1961-10-10
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Hewitt D Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:05
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2781503A
Cited
US2785390A
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US2818555A
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US2842755A
Cited
US2889542A
Cited
US2911628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |