US3519995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bias restoration arrangement for digital circuit matrix
Assignee: Unisys Corp
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Filing: 1967-02-15
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Granted: 1970-07-07
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Expires: 1987-02-15
Abstract
No abstract record available.
Inventors
- 👤 Charles P Gerrard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:40
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/62; H03K17/6221; G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007; H03K17/04; H03K17/041; H03K17/0412; H03K17/04126; H03K17/601
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |