US3461303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable threshold amplifier with input divider circuit
Assignee: International Business Machines Corp
•
Filing: 1966-12-14
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Granted: 1969-08-12
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Expires: 1986-12-14
Abstract
No abstract record available.
Inventors
- 👤 Charles C Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10851; H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K5/00; H03K5/01; H03K5/02; H03K5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3039009A
Cited
US3189745A
Cited
US3192388A
Cited
US3241082A
Cited
US3302034A
Cited
US3375450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |