US3005976A
Expired / Lapsed
US
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Ferroelectric circuits
Assignee: AT&T Inc
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Filing: 1955-11-21
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Granted: 1961-10-24
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Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 John R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/45; G; G11; G11C; G11C11/00; G11C11/21; G11C11/22; H01; H01G; H01G7/00; H01G7/02; H03K17/00; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2717372A
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US2695396A
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US2754230A
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US2666195A
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US2922143A
Cited
US2728693A
Cited
US2872661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-23 | 1965-04-24 | 1965-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-23 | 1969-04-24 | 1969-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-23 | 1973-04-24 | 1973-10-24 | $7700.00 | Window Closed / Lapsed |