US2926336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric device
Assignee: AT&T Inc
•
Filing: 1955-04-14
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Granted: 1960-02-23
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Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Alan G Chynoweth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:45
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/22; G11C13/00; G11C13/04; G11C13/047; H; H01; H01G; H01G7/00; H01G7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2793288A
Cited
US2648983A
Cited
US2743430A
Cited
US2695396A
Cited
US2709367A
Cited
US2742631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |