US2985769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast response gating circuit
Assignee: AT&T Inc
•
Filing: 1956-04-25
•
Granted: 1961-05-23
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Expires: 1976-04-25
Abstract
No abstract record available.
Inventors
- 👤 Frank E Blount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:19
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/04; H03K17/041; H03K17/0412; H03K17/04126; H03K3/00; H03K3/02; H03K3/26; H03K5/00; H03K5/01; H03K5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2730576A
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US2622213A
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US2670445A
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US2827574A
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US2751550A
Cited
US2871376A
Cited
US2705287A
Cited
US2831113A
Cited
US2901639A
Cited
US2849626A
Cited
US2776382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |