US2964648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor capacitor
Assignee: AT&T Inc
•
Filing: 1958-12-24
•
Granted: 1960-12-13
•
Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 Edward I Doucette
- 👤 Clarence J Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:21
CPC Classifications
H; H10; H10D; H10D1/00; H10D1/60; H10D1/62; H10D1/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2600500A
Cited
US2672528A
Cited
US2761020A
Cited
US2805347A
Cited
US2836776A
Cited
US2884607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |