US3535699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complenmentary transistor memory cell using leakage current to sustain quiescent condition
Assignee: International Business Machines Corp
•
Filing: 1968-01-15
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Granted: 1970-10-20
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Expires: 1988-01-15
Abstract
No abstract record available.
Inventors
- 👤 Fritz H Gaensslen
- 👤 Dominic P Spampinato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:35
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/401; G11C11/402; G11C11/4023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3177373A
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US3177374A
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US3309534A
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US3355721A
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US3390382A
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US3389383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |