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US3533089A
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Single-rail mosfet memory with capacitive storage
Assignee: Shell USA Inc
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Filing: 1969-05-16
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Granted: 1970-10-06
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Expires: 1989-05-16
Abstract
No abstract record available.
Inventors
- 👤 Sven E Wahlstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
G; G11; G11C; G11C8/00; G11C8/14; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/401; G11C11/403; G11C11/404; G11C11/4063; G11C11/407; G11C11/408; G11C11/409; G11C11/4096; H; H10; H10B; H10B12/00; H10B12/30
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) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |