Patent US3514633A successfully refreshed from Google Patents.
US3514633A
Expired / Lapsed
US
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Threshold detector circuit with cross coupled transistor pairs
Assignee: International Business Machines Corp
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Filing: 1966-01-14
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Granted: 1970-05-26
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Expires: 1986-01-14
Abstract
No abstract record available.
Inventors
- 👤 Eugene N Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:36
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/288; H03K3/2885; H03K3/2893; H03K3/2897; H03K5/00; H03K5/15
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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |